id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-255652-3n2dxljj	Challener, Douglas W.	Screening for COVID-19: Patient factors predicting positive PCR test	2020-05-19		.txt	text/plain	1162	67	50	title: Screening for COVID-19: Patient factors predicting positive PCR test SARS-CoV-2, the novel coronavirus causing COVID-19, was isolated in patients from Wuhan, China, in December 2019 and sparked a global pandemic in early 2020. At the Mayo Clinic in Rochester, Minnesota, we began screening patients for COVID-19 on a large scale on March 12, 2020, after Minnesota's first case was reported on March 10, 2020. The COVID-19-negative patients were selected in a random fashion by matching age (±5 years), sex, collection date, and testing location (Minnesota, Wisconsin, or Arizona) with the positive patients. This study investigates the results of testing ambulatory patients in a relatively low prevalence area in early March 2020 and suggests that exposure to the disease is more predictive of a positive test than any examined symptom. In this analysis, exposure to confirmed SARS-CoV-2 and recent travel were both significantly more predictive of a positive test than the presence of any symptoms.	./cache/cord-255652-3n2dxljj.txt	./txt/cord-255652-3n2dxljj.txt