id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-258304-86gqxajw	Bahl, Prateek	Droplets and Aerosols generated by singing and the risk of COVID-19 for choirs	2020-09-18		.txt	text/plain	1553	85	58	title: Droplets and Aerosols generated by singing and the risk of COVID-19 for choirs The results of detailed particle tracking (in supplementary video) reveals that the maximum velocity of droplets expelled, specifically for certain syllables such as 'do', 'fa' and 'ti', is approx. Figure 2c shows the velocity distribution of droplets that are visible while the subject was singing syllable 'sol' & 'la' and the direction in which these droplets are moving. Nevertheless, the droplets observed do not appear to be settling down rapidly and without adequate ventilation, these droplets can potentially saturate the indoor environment which can likely explain the very high attack rates of COVID-19 seen in choirs in the US and Europe (almost 87% in Skagit County, Washington) [1] . We note the present study only provides visual evidence of the droplets and aerosols expelled during singing and compare the associated velocities and directions with speaking and coughing.	./cache/cord-258304-86gqxajw.txt	./txt/cord-258304-86gqxajw.txt