id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-262328-q7mt0xve	Wajnberg, Ania	Humoral response and PCR positivity in patients with COVID-19 in the New York City region, USA: an observational study	2020-09-25		.txt	text/plain	4419	216	54	In this observational study, we ran an outreach programme in the New York City (NY, USA) area, including parts of Connecticut and New Jersey, to identify people who had recovered from SARS-CoV-2 infection for nasopharyngeal PCR (cobas 6800; Roche Diagnostics, Indianapolis, IN, USA) and serum IgG titre measurement (ELISA; Icahn School of Medicine at Mount Sinai, New York, NY, USA). We did not find reports of ELISA antibody assays as large as this one from areas with major COVID-19 hotspots, and found mixed and growing reports of IgG response to and PCR positivity for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) over time. In the 584 participants for whom both nasopharyngeal PCR testing and serum antibody testing was available, SARS-CoV-2 RNA was detected in 249 (43%) at a median of 20 days (IQR 18-23) from symptom onset and 12 days (9-14) from symptom resolution.	./cache/cord-262328-q7mt0xve.txt	./txt/cord-262328-q7mt0xve.txt