General population studies

Vaccine hesitancy among adults during Quebec’s COVID-19 vaccination campaign

Published in Frontiers in Public Health, the CARTaGENE research team, based at the Research Center at the Centre Hospitalier Universitaire Sainte-Justine and part of the CITF-funded CanPATH study, found that vaccination hesitancy among adults in Quebec was correlated with education levels, age and other socio-demographic determinants.

2022-04-14T15:47:08-04:00March 25, 2022|General population studies|

Impact of Omicron wave apparent in Canadian Blood Services’ January data

Most Canadian blood donors exhibited some form of immunity against SARS-CoV-2 in January 2022, primarily due to vaccination. Nonetheless, infection-acquired seroprevalence increased sharply between December 2021 and the end of January 2022, nearly tripling from 6.4% to 16.3%. Almost a quarter of donors aged 17-24 were seropositive for infection-acquired antibodies (22.2%). Key findings: Nearly [...]

2022-03-18T15:40:00-04:00March 18, 2022|General population studies|

Blood data from early 2022 reflect Omicron’s impact prior to the holidays

In the first of a series of biweekly reports, the Canadian Blood Services revealed Omicron’s traction in December 2021. While all blood donors tested positive for the spike (S) protein, primarily due to immunization, infection-acquired seropositivity (as evidenced by anti-N IgG antibodies) climbed from 7.5% to 10.1 % from December 25, 2021 to [...]

2022-03-09T12:35:32-05:00March 9, 2022|General population studies|

Canadian Blood Services December report: The advance of Omicron

The latest report from Canadian Blood Services, covering the early days of the Omicron wave, shows that, notwithstanding the nearly universal presence of anti-SARS-CoV-2 antibodies among blood donors, the number of donors who had antibodies due to prior infection rose. Key findings: The proportion of donors with evidence of a prior infection was 6.4% [...]

2022-02-14T13:58:21-05:00February 14, 2022|General population studies|

Latest Canadian Blood Services data reflect uptick in infections prior to Omicron surge

Remarkably, nearly all Canadian Blood Services blood donors sampled in November tested positive for antibodies against the SARS-CoV-2 spike protein. While this was mainly due to vaccination with at least one vaccine dose, seroprevalence from a prior infection with COVID-19 stood at 5.1%, higher than what was seen in previous months. In a subset [...]

2022-02-03T08:28:24-05:00January 31, 2022|General population studies|

Canadian Blood Services data reveal evidence of antibody wane among adult population

The latest Canadian Blood Services (CBS) report, from October 2021, indicates that 98% of blood donors sampled had antibodies to SARS-CoV-2. This number is largely driven by immunization with at least one vaccine dose, as infection-acquired seroprevalence stayed low, at 4.3%. Results also reveal a downward trend in the mean levels of antibodies across [...]

2022-01-10T10:33:18-05:00January 10, 2022|General population studies|
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