id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-275521-dlp055z8	Goldman, Emanuel	Exaggerated risk of transmission of COVID-19 by fomites	2020-07-03		.txt	text/plain	737	42	58	A clinically significant risk of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission by fomites (inanimate surfaces or objects) has been assumed on the basis of studies that have little resemblance to real-life scenarios. The longest survival (6 days) of severe acute respiratory syndrome coronavirus (SARS-CoV) on surfaces was done by placing a very large initial virus titre sample (10⁷ infectious virus particles) on the surface being tested. 1 Another study that claimed survival of 4 days used a similarly large sample (10⁶ infectious virus particles) on the surface. 3 Yet another study found long survival (5 days) of human coronavirus 229E on surfaces with what I would still consider a substantially large viral load (10³ plaque-forming units) in a cell lysate. For example, in the studies that used a sample of 10⁷, 10⁶, and 10⁴ particles of infectious virus on a small surface area, 1-3 these concentrations are a lot higher than those in droplets in real-life situations, with the amount of virus actually deposited on surfaces likely to be several orders of magnitude smaller.	./cache/cord-275521-dlp055z8.txt	./txt/cord-275521-dlp055z8.txt