id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-299359-s8j78naz	Sundaram, Maria E.	Influenza Vaccination Is Not Associated With Detection of Noninfluenza Respiratory Viruses in Seasonal Studies of Influenza Vaccine Effectiveness	2013-09-15		.txt	text/plain	3247	157	35	We investigated the association between influenza infection, vaccination, and detection of other respiratory viruses among children <5 years old and adults ≥50 years old with acute respiratory illness who participated in seasonal studies of influenza vaccine effectiveness. This could theoretically contribute to overestimation of true VE (ie, bias away from the null); therefore, a key assumption of the test-negative control design of influenza vaccine effectiveness studies is that the proportion of noninfluenza viral illness does not differ by influenza vaccination status [9] . The goals of this study were to determine if influenza vaccination is associated with detection of noninfluenza respiratory viruses and to determine if vaccine effectiveness estimates differ when different control groups are used in the analysis. For participants in these age groups, multiplex reverse transcription polymerase chain reaction (RT-PCR) testing was subsequently performed to detect other respiratory viruses, providing an opportunity to investigate the relationship between influenza vaccination and infection with other viral pathogens.	./cache/cord-299359-s8j78naz.txt	./txt/cord-299359-s8j78naz.txt