id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-273253-rgqvdzna	Skowronski, D. M.	Low SARS-CoV-2 sero-prevalence based on anonymized residual sero-survey before and after first wave measures in British Columbia, Canada, March-May 2020	2020-07-15		.txt	text/plain	4173	265	50	title: Low SARS-CoV-2 sero-prevalence based on anonymized residual sero-survey before and after first wave measures in British Columbia, Canada, March-May 2020 The goal of these serial snapshots was to establish baseline and early pandemic sero-prevalence for future attack rate comparison; to estimate cumulative incidence, residual susceptibility and the extent to which community transmission was suppressed; and to assess surveillance underascertainment across the winter-spring 2020 period in BC. Two of 869 sera were dual-assay positive at the March snapshot giving a crude seroprevalence of 0.23% (95%CI=0.03-0.83) and age-standardized sero-prevalence of 0.28% (95%CI=0.03-0.95). We estimated sero-prevalence based on dual-assay positivity and report cumulative incidence of 0.28% by the start of first wave population-level measures in March. Results of SARS-CoV-2 sero-survey screening by chemiluminescent assay for antibodies to spike (S1) and nucleocapsid proteins, by age group, March and May 2020 snapshots, Lower Mainland, BC, Canada Table 2 .	./cache/cord-273253-rgqvdzna.txt	./txt/cord-273253-rgqvdzna.txt