Background: The evolving proportion of the population considered immunologically naive versus primed for more efficient immune memory response to SARS-CoV-2 has implications for risk assessment. We sought to chronicle vaccine- and infection-induced seroprevalence across the first 7 waves of the COVID-19 pandemic in British Columbia, Canada.
Methods: During 8 cross-sectional serosurveys conducted between March 2020 and August 2022, we obtained anonymized residual sera from children and adults who attended an outpatient laboratory network in the Lower Mainland (Greater Vancouver and Fraser Valley). We used at least 3 immunoassays per serosurvey to detect SARS-CoV-2 spike and nucleocapsid antibodies. We assessed any seroprevalence (vaccineor infection-induced, or both), defined by positivity on any 2 assays, and infection-induced seroprevalence, also defined by dual-assay positivity but requiring both antinucleocapsid and antispike detection. We used estimates of infection-induced seropr
A large study that chronicles the trajectory of COVID-19 over the first 2-1/2 years of the pandemic suggests most British Columbia children and adults younger than age 60 developed antibodies to slash their risk of severe illness either through vaccination, infection or both.
A large study that chronicles the trajectory of COVID-19 over the first 2-1/2 years of the pandemic suggests most British Columbia children and adults younger than age 60 developed antibodies to slash their risk of severe illness either through vac
Dramatic change in proportion of Canadian population with Covid antibody during first 2.5 years of pandemic miragenews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from miragenews.com Daily Mail and Mail on Sunday newspapers.