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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 ....
Every positive COVID-19 sample in B.C. is now being sent to the province’s whole genome sequencing lab in Vancouver, where they are being analyzed to determine if the patient was infected with the Omicron variant. ....
Article content In the race between highly contagious COVID variants and B.C’s vaccination program, the province’s biggest hurdle has been the unpredictability of the vaccine supply from the federal government. B.C. surpassed one million vaccine shots injected on Friday as it marked another grim daily COVID-19 case count with 1,262 new infections. We apologize, but this video has failed to load. Try refreshing your browser, or COVID-19: Unpredictable vaccine deliveries challenge B.C. s vaccination program: Dix Back to video There’s about a one-week turnaround between when vaccine shipments are received by the province and when they’re delivered to health authorities and vaccination clinics, Health Minister Adrian Dix said Thursday. In recent weeks, the province was left with less than a day’s supply of the Pfizer vaccine, Dix said, which meant health officials had to get new shipments out to clinics within one or two days to ensure people booked ....
CBC Radio's The House: Campaigning for Canada's progressive voters cbc.ca - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from cbc.ca Daily Mail and Mail on Sunday newspapers.
COVID-19: Unpredictable vaccine deliveries challenge B.C. program: Dix canada.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from canada.com Daily Mail and Mail on Sunday newspapers.