id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-294372-pec1886j	Greene, Dina N.	Decreasing median age of COVID-19 cases in the United States—Changing epidemiology or changing surveillance?	2020-10-15		.txt	text/plain	1698	103	60	Result distributions by age and positivity were compared between early period (March-April 2020) and late periods (June-July 2020) of the COVID-19 pandemic. Overall, this suggests that observed age-related trends are driven by changes in testing patterns rather than true changes in the epidemiology of SARS-CoV-2 infection. In the United States, surveillance data suggest that mean age of infected patients is decreasing compared to the early stages of the COVID-19 pandemic. We used SARS-CoV-2 testing data from a national reference laboratory to characterize the age distribution of detected cases between March and July of 2020. Surveillance data in the United States have shown a trend toward decreasing age among persons with laboratory-confirmed SARS-CoV-2 infection. This study found a similar pattern among patients tested by a national reference laboratory, with the median age among patients testing positive being five years lower in June and early July compared to March and April.	./cache/cord-294372-pec1886j.txt	./txt/cord-294372-pec1886j.txt