trigram

This is a table of type trigram and their frequencies. Use it to search & browse the list to learn more about your study carrel.

trigram	frequency
the use of	426
the spread of	190
of the mask	187
personal protective equipment	175
medrxiv a license	173
license to display	173
display the preprint	173
the preprint in	173
a license to	173
granted medrxiv a	173
who has granted	173
to display the	173
has granted medrxiv	173
of face masks	171
preprint in perpetuity	157
copyright holder for	156
holder for this	156
the copyright holder	156
as well as	153
the author funder	141
which was not	139
is the author	138
this version posted	133
was not certified	121
by peer review	121
not certified by	121
certified by peer	121
the number of	117
health care workers	117
of cloth masks	116
for this preprint	115
use of masks	114
severe acute respiratory	111
acute respiratory syndrome	108
all rights reserved	106
the effect of	100
the risk of	100
in order to	97
the efficacy of	96
due to the	95
masks and respirators	94
is made available	94
license it is	94
it is made	94
the effectiveness of	94
international license it	94
made available under	94
available under a	94
face mask use	91
during the covid	85
a systematic review	83
a surgical mask	83
use of face	83
preprint this version	82
this preprint this	82
a face mask	82
in the community	81
wearing a mask	80
face masks in	80
masks in the	79
the face mask	76
the general public	76
world health organization	75
the filtration efficiency	70
of surgical masks	69
there is a	69
one of the	68
of the virus	64
allowed without permission	64
no reuse allowed	64
reuse allowed without	64
a is the	60
under a is	59
use of a	59
in health care	59
of n respirators	58
in this study	58
of the population	57
version posted april	57
for disease control	56
the transmission of	56
of personal protective	56
the impact of	55
the no talking	55
such as the	55
the general population	55
disease control and	54
the united states	53
control and prevention	53
according to the	52
the mask and	52
on the use	51
of the masks	51
there is no	51
compared to the	51
of medical masks	51
respiratory syndrome coronavirus	51
of masks in	50
spread of covid	49
in addition to	49
prevention and control	49
this article is	49
of the covid	48
wear a mask	48
to wear a	48
in terms of	48
surgical masks and	47
use of cloth	47
of masks and	46
spread of the	46
systematic review and	46
of the face	46
and surgical masks	46
the world health	46
the context of	45
in healthcare settings	45
for healthcare workers	44
review and meta	44
face masks and	44
in the context	44
the surgical mask	44
the importance of	44
article is protected	43
is protected by	43
face mask group	43
protected by copyright	43
the n mask	42
there was no	41
for this this	41
of this study	41
the case of	41
risk of infection	41
different types of	41
surgical masks are	41
this this version	41
need to be	41
based on the	41
the role of	41
in healthcare workers	41
filtration efficiency of	41
the effects of	40
surgical face masks	40
shown in figure	39
used in the	39
in the air	39
to reduce the	38
transmission of sars	38
of a mask	38
in the covid	38
of face mask	38
depending on the	37
was used to	37
the absence of	37
the mask is	37
well as the	37
the need for	36
and control of	36
it is important	36
the development of	36
to wear masks	36
in the case	36
masks in public	35
a number of	35
in the face	35
in hong kong	35
in the united	35
no talking group	35
version posted september	35
transmission of covid	35
masks and n	35
by the general	35
part of the	34
face mask wearing	34
a range of	34
of severe acute	34
to determine the	34
on the other	34
the presence of	34
transmission in households	33
found to be	33
of the pandemic	33
centers for disease	33
as a result	33
reduce the spread	33
review of the	33
in the mask	33
a total of	32
of respiratory viruses	32
a author funder	32
is important to	32
under a author	32
face masks are	32
the surface of	31
of the n	31
face masks to	31
may not be	31
use of surgical	31
the type of	30
the other hand	30
of the study	30
of mask mandates	30
mouth and nose	30
the possibility of	30
it is not	30
to prevent the	30
types of masks	30
efficacy of face	30
as part of	30
of wearing a	29
cloth masks in	29
infection prevention and	29
transmission of influenza	29
most of the	29
efficacy of cloth	29
been shown to	29
the novel coronavirus	29
mask use by	29
to protect the	28
related to the	28
masks are not	28
to the face	28
spread of respiratory	28
the lack of	28
medical masks and	28
filtering facepiece respirators	28
n respirators and	28
of coronavirus disease	28
the end of	27
the time of	27
the majority of	27
of the general	27
use of personal	27
the n respirator	27
of the filter	27
of the most	27
in the study	27
wearing a face	27
type of mask	27
the performance of	27
more likely to	27
the prevention of	26
of healthcare workers	26
use of ppe	26
among health care	26
a review of	26
of respiratory protection	26
can be used	26
half of the	26
the n o	26
for the public	26
the rate of	26
use of the	26
rational use of	26
contact with the	25
to evaluate the	25
masks can be	25
with and without	25
h n influenza	25
a lack of	25
n o mask	25
a mask is	25
that the use	25
the percentage of	25
and n respirators	25
and hand hygiene	25
without a mask	24
mask use in	24
to assess the	24
that can be	24
use by the	24
because of the	24
in response to	24
surface of the	24
randomised controlled trials	24
fitting face mask	24
associated with a	24
of infection in	24
of mask wearing	24
at the time	24
in the first	24
the level of	24
included in the	24
the implementation of	24
the degree of	24
prevent the spread	24
during a pandemic	24
the efficiency of	24
the severe acute	24
and medical masks	23
to surgical masks	23
surgical masks in	23
a variety of	23
of these masks	23
around the world	23
before and after	23
the results of	23
some of the	23
wearing the mask	23
face mask perceptions	23
the supply of	23
an n mask	23
in the absence	23
effect of mask	23
transmission of infectious	23
and eye protection	23
safety and health	23
by healthcare workers	23
and n masks	23
an influenza pandemic	23
wearing face masks	23
regarding the use	23
to medical masks	23
cloth masks are	22
the potential for	22
influenza transmission in	22
each of the	22
of novel coronavirus	22
as shown in	22
the wearing of	22
of transmission of	22
through the mask	22
mask and the	22
in our study	22
in the no	22
the wearer from	22
of influenza a	22
systematic review of	22
randomized clinical trial	22
this study was	22
medical masks in	22
the mask was	22
in this case	22
occupational safety and	21
masks may be	21
the aim of	21
of wearing masks	21
use of n	21
surgical face mask	21
are shown in	21
respirators and surgical	21
inside the mask	21
to protect themselves	21
the range of	21
stability of sars	21
in the us	21
size of the	21
the surgical masks	21
of the material	21
health care settings	21
mask use and	21
to be the	21
we did not	21
mask in the	21
side of the	21
the distribution of	21
number of cases	21
the face and	21
be used in	21
in contact with	21
and use of	21
reduction in the	21
the mask material	21
cloth face coverings	21
in combination with	21
with respect to	21
a function of	21
an infected person	21
we find that	21
at the same	21
should not be	21
the concentration of	21
in case of	21
protect the wearer	21
reduce the risk	20
difference in the	20
of mask use	20
the filter material	20
a result of	20
and efficacy of	20
a cluster randomized	20
efficiency of the	20
aerosol and surface	20
has been shown	20
transmission of the	20
be used to	20
the size of	20
of the disease	20
of infectious diseases	20
higher risk of	20
for preventing influenza	20
the fact that	20
none of the	20
the need to	20
significant difference in	20
of the wearer	20
the protection of	20
to protect against	20
associated with the	20
masks for the	20
and other respiratory	20
masks worn by	20
for patients with	20
advice on the	19
influenza a virus	19
the medical mask	19
is that the	19
nose and mouth	19
to measure the	19
wear face masks	19
masks in healthcare	19
airborne transmission of	19
in the room	19
shown in fig	19
be able to	19
of public health	19
likely to be	19
face masks for	19
the filtration performance	19
is shown in	19
center for disease	19
the authors declare	19
surgical mask and	19
the mask or	19
effect on the	19
that they have	19
healthcare workers in	19
filtration efficacy of	19
in the ed	19
the same time	19
as a function	19
this is a	19
use of facemasks	19
with the use	19
to prevent influenza	19
n respirators are	19
effectiveness of masks	19
the nonrebreathing mask	19
and respirators against	18
an increase in	18
health and safety	18
evaluation of the	18
wear a face	18
the mouth and	18
in the healthcare	18
masks should be	18
for at least	18
of an n	18
the application of	18
for the prevention	18
emerging infectious diseases	18
as compared with	18
of the total	18
in reducing the	18
with suspected or	18
particles in the	18
to ensure that	18
national institute for	18
respiratory virus transmission	18
of the filtration	18
addition to the	18
is based on	18
physical interventions to	18
to be used	18
person transmission of	18
the pressure drop	18
the mask to	18
a mask mandate	18
found that the	18
of universal masking	18
all of the	18
weekly case growth	18
use of medical	18
of the efficacy	18
in the current	18
to be a	18
of homemade masks	18
is not possible	18
the amount of	18
it may be	18
for the use	18
among the general	18
face mask in	18
the purpose of	18
cloth masks compared	18
prior to the	18
healthcare workers during	17
or reduce the	17
the chin valve	17
interrupt or reduce	17
to account for	17
for health care	17
use of respiratory	17
this study is	17
at the end	17
of surgical mask	17
healthcare workers and	17
face masks is	17
for coronavirus disease	17
is associated with	17
interventions to interrupt	17
was found to	17
filtration performance of	17
exhaled breath and	17
are required to	17
in the medical	17
there are no	17
slow the spread	17
the cloth masks	17
the filtration efficiencies	17
and personal protective	17
virus shedding in	17
of cloth face	17
the face of	17
and social distancing	17
for surgical masks	17
context of covid	17
it is possible	17
that cloth masks	17
the health care	17
the nose and	17
common hand disinfection	17
universal masking is	17
of the data	17
virus transmission in	17
observed in the	17
due to their	17
needs to be	17
caused by the	17
in this paper	17
of n masks	17
to interrupt or	17
mask or respirator	17
in accordance with	17
n filtering facepiece	17
in exhaled breath	17
the duration of	17
face fit factor	17
have shown that	17
cases in the	17
in an influenza	17
reduction from peak	17
of the flow	17
version posted november	16
which can be	16
from the patient	16
of protective masks	16
protective equipment for	16
data from the	16
the timing of	16
in the literature	16
no significant difference	16
respiratory virus shedding	16
preventing influenza among	16
members of the	16
we found that	16
preprint the copyright	16
of particle size	16
they have no	16
of oral flora	16
sides of the	16
to be effective	16
used for the	16
to create a	16
be found in	16
with regard to	16
use and control	16
surgical masks is	16
the benefits of	16
are associated with	16
to that of	16
of infectious agents	16
has led to	16
influenza among health	16
surface stability of	16
hand hygiene and	16
compared with sars	16
shedding in exhaled	16
considered to be	16
has not been	16
institute for occupational	16
patients with suspected	16
fit of the	16
there was a	16
infection control in	16
and the mask	16
a reduction in	16
that mask mandates	16
cluster randomised trial	16
face masks reduce	16
mask mandates and	16
transmission of respiratory	16
response to the	16
against viral aerosol	16
the centers for	16
breath and efficacy	16
of a face	16
and surface stability	16
should be used	16
of respiratory virus	16
the healthcare setting	16
to limit the	16
responsible for the	16
wearing of masks	16
the introduction of	16
for pandemic influenza	16
period of time	16
infection in healthcare	16
for use in	16
was not peer	16
suspected or confirmed	16
filtration efficiencies of	15
there have been	15
mode of transmission	15
of the cloth	15
and it is	15
to the covid	15
among young adults	15
masks to prevent	15
with medical masks	15
is defined as	15
of masks to	15
the ability of	15
the results from	15
prevent influenza transmission	15
the filtration efficacy	15
respiratory infections in	15
health care personnel	15
all authors have	15
that it is	15
a series of	15
it is a	15
in patients with	15
the university of	15
into the mask	15
risk of transmission	15
masks or respirators	15
effective reproduction number	15
in the number	15
a randomized trial	15
and in the	15
to healthcare workers	15
protection to prevent	15
of masks for	15
aerosol transmission of	15
were used to	15
care workers from	15
that surgical masks	15
for occupational safety	15
people in the	15
the coronavirus disease	15
direct contact with	15
of the coronavirus	15
of masks by	15
use of protective	15
compared with the	15
endophthalmitis after intravitreal	15
conflict of interest	15
that there are	15
randomized controlled trial	15
during the sars	15
in line with	15
control of respiratory	15
the ratio of	15
masks to protect	15
there is an	15
a cluster randomised	15
influenza and other	15
in the second	15
cloth masks and	15
in the environment	15
transmission of severe	15
any of the	15
they protect in	14
use of these	14
coughing and sneezing	14
masks during the	14
the study period	14
reduce exposure to	14
medical masks for	14
than surgical masks	14
in public places	14
it would be	14
the masks were	14
randomised trial of	14
on the face	14
the population is	14
the respiratory tract	14
trial of cloth	14
recommended by the	14
if there is	14
efficacy of homemade	14
middle east respiratory	14
general public to	14
this is the	14
mask on the	14
of sars cov	14
impact on the	14
masks and the	14
cloth masks may	14
can be found	14
east respiratory syndrome	14
filtration efficiency for	14
of a pandemic	14
consistent with the	14
shown in table	14
wearing masks and	14
n or n	14
compared with medical	14
face mask without	14
in the setting	14
between the two	14
found in the	14
would they protect	14
the present study	14
the slit lamp	14
ministry of health	14
physician face mask	14
the sars outbreak	14
edge of the	14
a mask in	14
by the mask	14
respirators and medical	14
it is also	14
efficacy of medical	14
an average of	14
factors such as	14
and community settings	14
m from the	14
in the use	14
it has been	14
through the filter	14
protect in an	14
risk of bias	14
performance of the	14
to the n	14
there has been	14
to prevent person	14
during the pandemic	14
care workers in	14
of surgical face	14
are needed to	14
a randomized intervention	14
large number of	14
that there is	14
testing the efficacy	14
the theory of	14
mask without tape	14
the setting of	14
eye protection to	14
the beginning of	13
exposure to respiratory	13
of the air	13
mask mandates were	13
not wearing masks	13
there are several	13
patients with covid	13
were associated with	13
mask wearing in	13
public during the	13
to the public	13
for protection against	13
the virus and	13
for infection control	13
effectiveness of facemasks	13
on the mask	13
masks by the	13
a mask or	13
that the mask	13
efficacy of surgical	13
variation in the	13
medical masks are	13
the fit test	13
that of the	13
and safety of	13
the most common	13
face mask is	13
department of health	13
when compared to	13
of the respirator	13
of hand hygiene	13
may also be	13
remain suspended in	13
a large number	13
in the model	13
public health officials	13
and does not	13
is consistent with	13
to respiratory infections	13
the control group	13
as source control	13
than that of	13
on the surface	13
the most important	13
protective mask use	13
wearing of face	13
by the public	13
the quality of	13
of the surgical	13
in the same	13
upper respiratory tract	13
respiratory protection for	13
no talking scenario	13
from the face	13
of patients with	13
reducing the spread	13
in public settings	13
the fit of	13
for face mask	13
the virus is	13
suspended in the	13
deaths per million	13
effectiveness of n	13
of surgical and	13
spread of infection	13
as compared to	13
analysis of the	13
size range of	13
and do not	13
the removal of	13
measures such as	13
note that the	13
which is the	13
masks compared with	13
masks have been	13
randomized intervention trial	13
is used to	13
in the u	13
not statistically significant	13
mask may be	13
that face masks	13
reducing transmission of	13
the emergence of	13
donning and doffing	13
face mask and	13
used as a	13
the mask mandate	13
can lead to	13
group compared to	13
were observed in	13
would like to	13
surgical masks or	13
has been a	13
compared to a	13
of respiratory droplets	13
across the globe	13
a set of	13
and respirators to	13
to the mask	13
the outbreak of	13
the ministry of	12
effectiveness of surgical	12
facial skin temperature	12
and after the	12
using face masks	12
dummies for each	12
surgical mask or	12
of the patient	12
have declared that	12
a recent study	12
the community setting	12
men and women	12
may be used	12
social distancing and	12
masks do not	12
the effective reproduction	12
as in the	12
the incidence of	12
authors have declared	12
the mask in	12
of the epidemic	12
this suggests that	12
of the use	12
protecting health care	12
masks or face	12
infection in the	12
assessment of the	12
the study was	12
area of the	12
in comparison to	12
toward mask wearing	12
use in the	12
sense of security	12
masks as a	12
medical face masks	12
respiratory protective devices	12
health care providers	12
total number of	12
no talking policy	12
n respirator for	12
role in the	12
medrxiv preprint figure	12
clinical respiratory illness	12
authors declare that	12
the submitted work	12
for the general	12
the adoption of	12
there were no	12
of the novel	12
aim of this	12
defined as the	12
increase in the	12
ultraviolet germicidal irradiation	12
were found to	12
an intravitreal injection	12
face mask with	12
worn by the	12
depends on the	12
such as influenza	12
the utility of	12
effectiveness of the	12
modes of transmission	12
study was to	12
the size range	12
time of writing	12
to prevent transmission	12
wearing a tight	12
used in this	12
false sense of	12
in their s	12
of facemasks in	12
the shortage of	12
daily case growth	12
against droplet infection	12
disposable n s	12
the most effective	12
surgical mask is	12
to the use	12
filtering face piece	12
by severe acute	12
size distribution of	12
infections among the	12
to increase the	12
health care worker	12
the public during	12
mask use is	12
the appearance of	12
masks reduce exposure	12
respiratory infections among	12
a novel coronavirus	12
in the range	12
designed to protect	12
there is also	12
obtained from the	12
growth rate of	12
endothelial growth factor	12
with a mask	12
or face coverings	12
the proportion of	12
the same mask	12
differences in the	12
de novo headache	12
n respirators versus	12
on personal protective	12
no face mask	12
protection of the	12
the emergency department	12
seems to be	12
of the same	12
can also be	12
were in their	12
mask mandates are	12
of health and	12
a pollution mask	12
of the evidence	12
are reported in	12
to allow for	12
be effective in	12
with novel coronavirus	12
to support the	12
case growth rates	12
to investigate the	12
a distance of	12
it can be	12
mask use during	12
droplets and aerosols	12
front of the	12
in weekly cases	11
of the respirators	11
professional and home	11
surgical masks were	11
between the mask	11
significant differences between	11
n masks to	11
correct use of	11
the total number	11
during this pandemic	11
superior portion of	11
influenza virus in	11
not possible to	11
are summarized in	11
outside of the	11
application of a	11
in front of	11
are likely to	11
they are not	11
compared to medical	11
to mitigate the	11
the fit factor	11
masks in preventing	11
the incubation period	11
among healthcare workers	11
of the scientific	11
close contact with	11
that wearing a	11
in preventing the	11
to have a	11
fraction of the	11
protective equipment and	11
healthcare workers from	11
when they are	11
respiratory protection devices	11
spread of sars	11
were instructed to	11
into contact with	11
in the population	11
summarized in table	11
national academy of	11
in table a	11
face mask containers	11
to ensure the	11
universal face mask	11
and infection control	11
of exposure to	11
n masks were	11
exposure to the	11
we tested the	11
how to use	11
in the prevention	11
was defined as	11
medical masks to	11
of commercially available	11
declare that they	11
was no significant	11
respiratory protection against	11
macintyre et al	11
respirators versus surgical	11
facemasks and hand	11
infection control measures	11
their ability to	11
by health care	11
versus surgical masks	11
mask wearing is	11
for up to	11
to provide a	11
disease prevention and	11
evidence on the	11
we do not	11
in the timing	11
the usage of	11
structure of the	11
in viral shedding	11
thought to be	11
for the no	11
n respirators to	11
mask and n	11
is one of	11
the findings of	11
changes in the	11
to examine the	11
end of the	11
in the vicinity	11
the current pandemic	11
of the world	11
protective equipment during	11
and can be	11
masks to reduce	11
suggests that the	11
prevention of infection	11
on masks and	11
theory of planned	11
cluster randomized clinical	11
to the general	11
provided by the	11
percentage of the	11
as long as	11
reported mask usage	11
in the emergency	11
a mask and	11
centre for disease	11
face mask to	11
around the mask	11
mask use may	11
the order of	11
by means of	11
masks that are	11
mask is worn	11
equipment during the	11
distribution of the	11
during the study	11
the edge of	11
away from the	11
the course of	11
cluster randomized trial	11
risk factors for	11
wearing a surgical	11
studies are needed	11
of particle sizes	11
were included in	11
with a high	11
be related to	11
in which the	11
randomised controlled trial	11
in the usa	11
of the sars	11
is the first	11
is possible that	11
can result in	11
to protect others	11
did not have	11
the management of	11
mask mandates on	11
efficacy of the	11
shown to be	11
with a mean	11
perform hand hygiene	11
are designed to	11
have not been	11
showed that the	11
respirators against respiratory	11
a randomized clinical	11
against respiratory infections	11
of common hand	11
nature of the	11
face masks by	11
should be considered	11
protection for healthcare	11
as of april	11
bacterial filtration efficiency	11
in all cases	11
and there is	11
of the sample	11
for this study	11
for n respirators	11
aerosol generating procedures	11
is also a	11
the relationship between	11
of airborne transmission	11
common fabric materials	11
applied to the	11
the treatment of	11
high risk of	11
portion of the	11
of masks is	11
may be more	10
methods such as	10
use face masks	10
tested n respirators	10
n respirators for	10
for the simulation	10
the ability to	10
routine use of	10
of a surgical	10
due to a	10
performance of cloth	10
fabric materials against	10
of the infection	10
a higher risk	10
phase of the	10
basic reproduction number	10
are surgical masks	10
masks in a	10
n fit test	10
and a surgical	10
to control the	10
and respirators in	10
appear to be	10
food and drug	10
l p r	10
potential implications for	10
prior studies have	10
surgical mask with	10
would need to	10
of nosocomial transmission	10
of the pla	10
included in this	10
mask can be	10
appears to be	10
especially in the	10
removal of the	10
a barrier to	10
clouds and respiratory	10
the superior portion	10
for reducing transmission	10
u r n	10
mask with tape	10
the exhaled air	10
and how adequate	10
should also be	10
masks and common	10
reported in the	10
randomized controlled trials	10
it is recommended	10
transmission of infection	10
masks for preventing	10
of the current	10
particles smaller than	10
to reduce transmission	10
the rates of	10
connected to the	10
and common fabric	10
for disease prevention	10
new york and	10
of hospitalized patients	10
how adequate are	10
the date of	10
be noted that	10
gas clouds and	10
in cloth masks	10
workers from sars	10
and facial protection	10
this systematic review	10
in the public	10
r o o	10
cloth face masks	10
study suggests that	10
o u r	10
respiratory droplets and	10
negative pressure mask	10
the issue of	10
when a mask	10
to form a	10
in healthcare and	10
important to note	10
was used for	10
full text review	10
taken into account	10
after intravitreal injection	10
which may be	10
flow rate of	10
a combination of	10
new york state	10
in contrast to	10
in the operating	10
results suggest that	10
purpose of this	10
chen et al	10
to wear face	10
for the covid	10
the current covid	10
surgical masks against	10
with the same	10
such that the	10
compliance with the	10
in the future	10
the included studies	10
connected to a	10
is necessary to	10
the sides of	10
prevent transmission of	10
adequate are surgical	10
results of this	10
case of the	10
made face masks	10
degree of protection	10
is not the	10
and the use	10
respiratory and facial	10
study was conducted	10
to be more	10
be used for	10
a false sense	10
the healthcare workers	10
respiratory pathogen emissions	10
do not have	10
implications for reducing	10
it is therefore	10
reduction in weekly	10
on the filtration	10
for the n	10
of cumulative cases	10
soap and water	10
o o f	10
the national academy	10
of health care	10
and respirators for	10
of the model	10
optimal ppe use	10
play a role	10
j o u	10
result of the	10
of each mask	10
the masks and	10
the mask for	10
p r e	10
of masks or	10
and did not	10
understanding of the	10
passing through the	10
and respiratory pathogen	10
p r o	10
majority of the	10
of different types	10
droplets and contact	10
acute respiratory infections	10
fabrics used in	10
nm size particles	10
turbulent gas clouds	10
as they are	10
respiratory virus infection	10
workers during the	10
aerosol filtration efficiency	10
to test the	10
limit the spread	10
they do not	10
medical grade masks	10
n a l	10
of common fabrics	10
difference between the	10
a l p	10
hospitalized patients with	10
use of gloves	10
the addition of	10
world health organisation	10
for the protection	10
wearing masks in	10
r n a	10
vast majority of	10
used by the	10
if they are	10
led to a	10
based on a	10
face mask for	10
the h n	10
regardless of the	10
on how to	10
that could be	10
to understand the	10
healthcare and community	10
of n filtering	10
in new york	10
spread of droplets	10
of the particle	10
smaller than the	10
and i m	10
mask usage in	10
reported to be	10
it should be	10
of facial protection	10
in the nm	10
in short supply	10
the middle of	10
available in the	10
at risk of	10
in the hospital	10
the onset of	10
number of studies	9
wearing a pollution	9
face masks should	9
during the no	9
been found to	9
was associated with	9
on the efficacy	9
cumulative number of	9
in close contact	9
wear masks in	9
other personal protective	9
virus in the	9
in a health	9
of the included	9
the pore size	9
out in public	9
lead to a	9
that the n	9
recommend the use	9
when there is	9
acute respiratory infection	9
of infection and	9
studies have shown	9
of the nose	9
influence on the	9
of face shields	9
of infected patients	9
cloth masks were	9
other types of	9
to the virus	9
the area of	9
beginning of the	9
we use the	9
spread of coronavirus	9
a n mask	9
vascular endothelial growth	9
do n respirators	9
efficacy of n	9
of people wearing	9
for personal protective	9
head and neck	9
account for the	9
in the size	9
to health care	9
it is the	9
inside of the	9
cloth face mask	9
the public to	9
the efficacy and	9
and how to	9
a randomized controlled	9
to prevent respiratory	9
that face mask	9
on the effectiveness	9
authors declare no	9
the potential to	9
be worn by	9
have been reported	9
effect of the	9
in preventing influenza	9
the basic reproduction	9
the virus in	9
mask to the	9
be taken into	9
study showed that	9
and health care	9
to mask wearing	9
of filtration efficiency	9
masks were not	9
the state of	9
the patient is	9
pressure injury prevention	9
mask group compared	9
to the editor	9
the population wearing	9
o flow rates	9
case growth in	9
or confirmed covid	9
to the filter	9
mask is not	9
a cloth mask	9
an overview of	9
in figure s	9
the product of	9
outside the mask	9
the practice of	9
development of a	9
we note that	9
the start of	9
this study are	9
also known as	9
were conducted in	9
the vast majority	9
the sars epidemic	9
surgical and n	9
v v ethanol	9
wearing an n	9
masks and other	9
study found that	9
to avoid the	9
and public health	9
leung et al	9
to note that	9
our ability to	9
the respiratory event	9
that n respirators	9
from peak daily	9
face mask may	9
a sample of	9
supported by the	9
in the short	9
of the manuscript	9
were carried out	9
the speech scenarios	9
in the following	9
in a study	9
function of the	9
to mask use	9
as the number	9
significant reduction in	9
so as to	9
percentage of people	9
number of cumulative	9
an observational study	9
and cloth masks	9
to improve the	9
masks are used	9
bacteria and viruses	9
outer surface of	9
respirators to prevent	9
of n and	9
materials used in	9
increase the risk	9
influenza other respir	9
the mask real	9
the fight against	9
by measuring the	9
the wake of	9
ranging from to	9
wear a surgical	9
conflicts of interest	9
transmission routes of	9
and barriers to	9
a no talking	9
and drug administration	9
involved in the	9
deposited on the	9
to the patient	9
or n mask	9
wearing masks to	9
to model the	9
exposed to the	9
face coverings to	9
novel coronavirus in	9
a health care	9
inhalation and exhalation	9
is wearing a	9
effectiveness of face	9
be associated with	9
the dolfino frontier	9
it does not	9
these results are	9
the cumulative number	9
at the university	9
transmission dynamics in	9
passes through the	9
the national institute	9
in the aerosol	9
level against airborne	9
periods of time	9
in many countries	9
focused on the	9
facemasks in reducing	9
simple respiratory protection	9
incubation period of	9
reported in table	9
respirator for preventing	9
face of the	9
and face masks	9
version posted july	9
efficacy of masks	9
n masks in	9
workers and sick	9
no difference between	9
patients infected with	9
tested and non	9
is critical to	9
of the new	9
perception of risk	9
and the nonrebreathing	9
universal masking in	9
against airborne viruses	9
factors associated with	9
is wearing masks	9
the odds of	9
mask use on	9
not sufficient to	9
of aerosol transmission	9
to monitor the	9
pressure drop across	9
be used as	9
the results in	9
figure shows the	9
has been used	9
case of a	9
hospitals in the	9
in the light	9
york and washington	9
an outbreak of	9
masks against covid	9
estimates of the	9
characteristics of the	9
coughing or sneezing	9
control of the	9
within the mask	9
a source of	9
velocity of the	9
along with the	9
masks compared to	9
respiratory protective equipment	9
number of people	9
droplets that are	9
medical mask arm	9
virus infection in	9
the mask during	9
referred to as	9
a statistically significant	9
and the n	9
in the provinces	9
of the time	9
protection level against	9
are known to	9
infections in healthcare	9
may result in	9
the gaps between	9
in compliance with	8
and that the	8
a diameter of	8
the virus to	8
that have been	8
are based on	8
is due to	8
reports no disclosures	8
from the mouth	8
a scoping review	8
mask was worn	8
at least one	8
assumed to be	8
during the procedure	8
of a single	8
mask does not	8
this study has	8
of the literature	8
of the first	8
when masks are	8
indicates that the	8
of mask and	8
on the basis	8
n masks and	8
worn by patients	8
efficiency of common	8
not wear a	8
in community settings	8
for the community	8
at least of	8
protection to the	8
the new york	8
for the face	8
a mask to	8
for more than	8
the outer layer	8
of negative emotions	8
hydrogen peroxide vapor	8
pneumonia in china	8
mask to limit	8
mask or not	8
of airborne particles	8
workers in the	8
more particles than	8
levels of evidence	8
the face velocity	8
not wearing a	8
trial comparing fit	8
to pass through	8
the average daily	8
risk of endophthalmitis	8
reduces the risk	8
is not sufficient	8
in this setting	8
infection in health	8
simulated intravitreal injections	8
subjects wearing a	8
between the face	8
european centre for	8
hand hygiene to	8
people who have	8
to obtain a	8
for the mask	8
sample size of	8
novel influenza a	8
at least in	8
and the other	8
common fabrics used	8
in respiratory cloth	8
american society for	8
at l min	8
the process of	8
efficacy and safety	8
is an effective	8
as an example	8
number of new	8
should be noted	8
to study the	8
has also been	8
shortage of ppe	8
cloth masks is	8
to be in	8
medrxiv preprint the	8
of respiratory infections	8
may be an	8
the scientific evidence	8
new york times	8
in the era	8
to the current	8
due to sars	8
preventing the spread	8
because they are	8
an n respirator	8
public to wear	8
was no difference	8
wide range of	8
around the face	8
optimal use of	8
a short period	8
use of respirators	8
in the present	8
masked and unmasked	8
during the current	8
in the wake	8
is an important	8
we used a	8
princess cruise ship	8
a risk of	8
of personal data	8
a wide range	8
of infection control	8
of infectious disease	8
cases of covid	8
of which are	8
risk of contracting	8
number of covid	8
the study by	8
was set to	8
that the virus	8
from patients with	8
in spite of	8
medical mask group	8
in times of	8
flow through the	8
risk of exposure	8
hygiene to prevent	8
the fraction of	8
of disposable n	8
nosocomial transmission of	8
coughs or sneezes	8
is difficult to	8
during the influenza	8
decontamination of n	8
vs n respirator	8
a significant difference	8
an n filtering	8
such as those	8
studies have suggested	8
to calculate the	8
be reserved for	8
no conflict of	8
the control of	8
of social distancing	8
we estimate the	8
as a whole	8
face masks during	8
community use of	8
at all times	8
the difference in	8
to analyze the	8
and for the	8
provide protection level	8
and filtration efficiency	8
n respirators provide	8
clinical trial comparing	8
surgical mask vs	8
a role in	8
efficacy of a	8
the occurrence of	8
study of the	8
into the environment	8
the velocity of	8
respirators to medical	8
contribute to the	8
we need to	8
seir and abm	8
dolfino frontier mask	8
to estimate the	8
infections in the	8
filtration efficiency was	8
and limited reuse	8
public health and	8
and sick patients	8
each of these	8
part of a	8
novel coronavirus from	8
should be worn	8
of the respiratory	8
infectious agents in	8
masks or n	8
continuous use of	8
the production of	8
a protective mask	8
control recommendations for	8
or n masks	8
can be seen	8
was performed in	8
and without a	8
illness among young	8
the public health	8
to help slow	8
air purifying respirators	8
in the general	8
is a critical	8
may reduce the	8
the extent to	8
to do so	8
patient face mask	8
version of the	8
suggested that the	8
cases and deaths	8
may be a	8
cubic time trend	8
of emerging infectious	8
a comparison of	8
the united kingdom	8
and should be	8
cases of oral	8
for this reason	8
protection against influenza	8
social distancing measures	8
of patients infected	8
like illness among	8
application of the	8
with the aim	8
of the following	8
in prevention of	8
results from the	8
filtration efficiencies for	8
or n respirators	8
such as hand	8
reduce transmission of	8
in the supplementary	8
of materials used	8
masks against influenza	8
no difference in	8
of n mask	8
preventing the transmission	8
of facemasks and	8
subjects were instructed	8
of facemasks to	8
with a large	8
as the use	8
gaps between the	8
prevent respiratory virus	8
impact of the	8
the perception of	8
help slow the	8
mask is a	8
extent to which	8
in this review	8
the infection control	8
other respiratory viruses	8
mask vs n	8
in dental practice	8
influenza in the	8
important role in	8
has been reported	8
in the n	8
powered air purifying	8
n mask and	8
endophthalmitis following intravitreal	8
the department of	8
and the public	8
respiratory cloth masks	8
for each of	8
subjects with a	8
in the filtration	8
version posted june	8
appear to have	8
preventing transmission of	8
value of the	8
of at least	8
volume flow rate	8
could be used	8
information on the	8
viral respiratory infections	8
of the tested	8
effect of surgical	8
suggest that the	8
and the efficacy	8
population wearing masks	8
of an outbreak	8
is known to	8
and found that	8
from the respiratory	8
when worn by	8
homemade cloth masks	8
it is necessary	8
the era of	8
to minimize the	8
in public spaces	8
particle filtration efficiency	8
have been shown	8
caring for patients	8
was carried out	8
into account the	8
and seasonal influenza	8
for wearing masks	8
respirators in health	8
face masks with	8
if this is	8
with adhesive tape	8
diamond princess cruise	8
with mask use	8
the necessity of	8
respirators and masks	8
shows that the	8
mask in public	8
to curtail the	8
in some cases	8
if it is	8
n respirator use	8
that they are	8
the value of	8
higher than the	8
used in respiratory	8
with pneumonia in	8
close to the	8
described in the	8
have suggested that	8
decontamination and reuse	8
mask use was	8
surgical masks to	8
the new coronavirus	8
did not show	8
the influenza season	8
continue to be	8
as there is	8
to simulate a	8
or not to	8
a period of	8
to public health	8
little is known	8
the field of	8
this may be	8
is needed to	8
of an individual	8
parts of the	8
early universal masking	8
in the field	8
that should be	8
hand hygiene in	8
control in health	8
viral load in	8
it could be	8
the baseline model	8
compared to no	8
may have been	8
mask mandates in	8
in the fight	8
the severity of	8
n mask is	8
the n group	8
masks to be	8
there are a	8
medrxiv preprint table	8
results show that	8
to determine whether	8
two types of	8
more than one	8
has resulted in	8
to the pandemic	8
implementation of the	8
patients with pneumonia	8
ability of the	8
is likely to	8
contamination by severe	8
masks are in	8
the availability of	8
the mask area	8
is that it	8
the case for	8
the age of	8
gaps between filaments	8
coronavirus from patients	8
even if the	7
the convenience no	7
touch their face	7
infectious diseases in	7
of a respirator	7
in this article	7
a negative pressure	7
a global pandemic	7
filtering capacity of	7
protection against airborne	7
precautions against droplets	7
n respirator and	7
with a diameter	7
we focus on	7
for the purpose	7
are in the	7
is the most	7
tables a and	7
quality of the	7
have found that	7
by the government	7
in figure a	7
dependent on the	7
is thought to	7
in this regard	7
come in contact	7
of the fabric	7
analysis of variance	7
a and a	7
masks in blocking	7
integrity of the	7
of the authors	7
respiratory transmissible viruses	7
against coronaviruses and	7
with a higher	7
as a percentage	7
novel coronavirus disease	7
and control recommendations	7
approved by the	7
of infection to	7
transmissible viruses for	7
so that the	7
in the control	7
the environment and	7
significant effect on	7
of the health	7
context of the	7
be seen in	7
against respiratory infection	7
protect against droplet	7
cfus compared to	7
is known about	7
range of particle	7
many of the	7
more effective than	7
has become a	7
this can be	7
the infectivity of	7
cloth masks to	7
the diamond princess	7
academy of sciences	7
and may be	7
in the middle	7
viruses for the	7
n respirators vs	7
public health agency	7
mandates in the	7
accordance with the	7
clinical characteristics of	7
risk of covid	7
of de novo	7
the speech scenario	7
davies et al	7
that we have	7
a patient with	7
mask wearing and	7
in a simulated	7
to mask or	7
as one of	7
and the general	7
in hospitals and	7
cm from the	7
the design of	7
masks and gloves	7
via respiratory droplets	7
when the mask	7
and mask use	7
many of these	7
of the other	7
two layers of	7
face masks can	7
the edges of	7
supply of ppe	7
protection for the	7
respiratory viral infections	7
the flow field	7
this is an	7
masks made of	7
we use a	7
if the mask	7
study is that	7
for infection prevention	7
did not wear	7
between the no	7
at high risk	7
have a significant	7
but does not	7
any type of	7
lagged cases and	7
n respirators were	7
higher rates of	7
indicate that the	7
mass flow rate	7
n mask was	7
not be used	7
glove and mask	7
health care setting	7
of a patient	7
as an alternative	7
to the same	7
respirator and a	7
edges of the	7
respiratory infection in	7
and transmissibility of	7
that in the	7
control the spread	7
as a potential	7
in both the	7
fewer cfus compared	7
in indoor environments	7
face masks have	7
of masks that	7
number of pandemic	7
studies on the	7
a rapid systematic	7
do not wear	7
small number of	7
droplets due to	7
of respiratory protective	7
but it is	7
party of the	7
protect themselves from	7
on the masks	7
disinfect your hands	7
no cases of	7
to the survey	7
ratio of the	7
section of the	7
average of the	7
protective equipment in	7
of the subjects	7
of the governor	7
to the surface	7
was the most	7
use of this	7
in the speech	7
of the human	7
syndrome coronavirus in	7
results from a	7
by the world	7
infected with novel	7
the current study	7
in protecting health	7
to the surgical	7
face masks may	7
of respiratory and	7
the common cold	7
countries or regions	7
of hygiene and	7
is larger than	7
layer of the	7
mask group and	7
resistance of the	7
of the facial	7
seto et al	7
archived at http	7
effect of a	7
on the same	7
the collective interest	7
such as cotton	7
to quantify the	7
coronaviruses and other	7
protective masks in	7
to make the	7
of the box	7
no competing interests	7
limited reuse of	7
has a significant	7
the influenza pandemic	7
such as a	7
spread of disease	7
the study and	7
hand hygiene alone	7
during the speech	7
protective face masks	7
with a loose	7
the mask policy	7
face coverings in	7
masks have a	7
use of facial	7
as state policy	7
contracting the virus	7
society for testing	7
are included in	7
we propose a	7
novel coronavirus outbreak	7
the particle counter	7
the problem of	7
to use masks	7
effectiveness of different	7
yet to be	7
known to be	7
respiratory infectious diseases	7
the basis of	7
the vicinity of	7
and development of	7
masks on the	7
is the case	7
the reduction in	7
of precautions against	7
at that time	7
there is limited	7
the consequences of	7
mask use as	7
determined by the	7
n and n	7
at the beginning	7
of aerosol particles	7
the ongoing covid	7
shortage of personal	7
health care professionals	7
home made masks	7
on the size	7
of mask coverage	7
bacterial viral filter	7
the who and	7
of influenza virus	7
facemasks for the	7
the air and	7
a high risk	7
inward and outward	7
mask for a	7
did not affect	7
of the effectiveness	7
the results are	7
masking in the	7
reproduction number of	7
masks to filter	7
have the same	7
to the no	7
evidence to support	7
of n s	7
hcws exposed to	7
respect to the	7
proved to be	7
the different types	7
is not a	7
component of the	7
put on the	7
on the performance	7
with an average	7
all over the	7
a mask on	7
added to the	7
singing and coughing	7
population is wearing	7
frequently asked questions	7
was a significant	7
of respiratory infection	7
and google scholar	7
present in the	7
the cloth mask	7
on the inside	7
the air for	7
type i surgical	7
be more effective	7
the outer surface	7
is composed of	7
state policy source	7
our seir and	7
with sars patients	7
infected with covid	7
shape of the	7
the possibility that	7
i surgical mask	7
to no mask	7
the data source	7
the design and	7
inside the chamber	7
to be worn	7
quantitative fit testing	7
breathability of the	7
percentage of particles	7
evidence suggests that	7
and effectiveness of	7
in the analysis	7
of the public	7
the tested masks	7
on face mask	7
was connected to	7
no conflicts of	7
as seen in	7
of the particles	7
use and limited	7
in controlling the	7
mask use for	7
the viral aerosol	7
a face covering	7
is able to	7
study on the	7
the particle concentration	7
of the droplets	7
fit to the	7
prevention of nosocomial	7
table shows the	7
on the development	7
consists of a	7
at this time	7
attached to the	7
to the type	7
in the last	7
for respiratory protection	7
can be a	7
of ppe in	7
in this work	7
facial protective equipment	7
efficiency against viral	7
a mask with	7
intensive care units	7
should wear a	7
that do not	7
the volume flow	7
less effective than	7
cotton cloth masks	7
the primary outcome	7
the precautionary principle	7
such as social	7
can be achieved	7
n masks are	7
estimation of the	7
are more likely	7
respirators against coronaviruses	7
the penetration of	7
of the test	7
diseases such as	7
wearing n respirators	7
more than of	7
of protective equipment	7
mask use to	7
the no face	7
in favor of	7
for health workers	7
intravitreal injection of	7
in our sample	7
org as state	7
face and the	7
face masks were	7
against the virus	7
the difference between	7
healthcare workers are	7
the authors of	7
of infected people	7
patients with acute	7
with soap and	7
of a simple	7
of influenza in	7
performance of an	7
rapid systematic review	7
studies showed that	7
of endophthalmitis after	7
an infected patient	7
using the same	7
extended use of	7
impact of mask	7
respirators provide protection	7
konda et al	7
a change in	7
can be easily	7
filtering facepiece respirator	7
mask wearing by	7
endoscopic sinus surgery	7
masks were found	7
medrxiv preprint of	7
of the who	7
interest in the	7
the nature of	7
one of these	7
shortage of masks	7
particle size range	7
not affect the	7
of ppe for	7
a face shield	7
leakage around the	7
the source of	7
peak expiratory flow	7
with the mask	7
find that the	7
and contact in	7
of less than	7
the form of	7
of the effect	7
effective in reducing	7
in relation to	7
is equivalent to	7
the mask on	7
may lead to	7
interventions for pandemic	7
onset of the	7
in the upper	7
to face mask	7
varying degrees of	7
larger than the	7
in the event	7
against droplets and	7
in this area	7
were able to	7
care workers and	7
when an infected	7
which is a	7
masks could be	7
reusable face masks	7
of a cloth	7
talking and coughing	7
medical mask use	7
respirators should be	7
and should not	7
gloves and masks	7
be expected to	7
when and how	7
from an infected	7
coming into contact	7
face masks against	7
growth in the	7
contact in prevention	7
types of respiratory	7
in the previous	7
of n respirator	7
properties of the	7
masks should not	7
increased risk of	7
level of protection	7
institutional review board	7
due to its	7
effectiveness of precautions	7
the particle size	7
number of masks	7
of the cartridge	7
a few hours	7
masks in order	7
there may be	7
of the snorkel	7
like to thank	7
the light of	7
other respiratory transmissible	7
although it is	7
reuse of n	7
on both sides	7
serves as a	7
has shown that	7
pore size of	7
that mask use	7
masks in protecting	7
mask or material	7
protection against droplet	7
a study of	7
their use of	7
used to determine	7
of this research	7
perception of the	7
the strength of	7
are capable of	7
during an intravitreal	7
in this simulation	7
for face masks	7
a study in	7
advice for the	6
the theoretical domains	6
resulting in a	6
droplets onto the	6
acute influenza infection	6
by using a	6
spread of a	6
load in the	6
masks has been	6
greenhalgh et al	6
small airborne particles	6
with a new	6
case fatality rate	6
in hospitals in	6
have to be	6
optimal mask use	6
has to be	6
particulate respirator and	6
of the policy	6
filter surface area	6
prevention of influenza	6
to a lesser	6
disinfection of pla	6
through the material	6
the outcome is	6
to air pollution	6
masks used in	6
the most commonly	6
protective equipment contamination	6
a factor of	6
reduce the transmission	6
in table and	6
a surgical face	6
in the sars	6
with acute influenza	6
mask with a	6
d i f	6
respiratory viruses on	6
masks reduce the	6
universal masking and	6
contributed to the	6
as indicated in	6
the n masks	6
solution to the	6
to the wearer	6
in the treatment	6
on the ground	6
aerodynamic characteristics and	6
for universal masking	6
the probability of	6
were analyzed using	6
the operating theatre	6
patients and the	6
volume of the	6
from the air	6
was conducted in	6
by the covid	6
respiratory syncytial virus	6
for isolation precautions	6
the provinces with	6
the authors have	6
change in the	6
and the effect	6
performance of a	6
from acute respiratory	6
over the world	6
on coronavirus disease	6
guideline for isolation	6
data in the	6
surgical and cotton	6
on the outer	6
li et al	6
less likely to	6
a significant effect	6
in medical face	6
the nm to	6
charges on the	6
our sample period	6
as surgical masks	6