Seroprevalence due to infection continued to be stable near the 80% mark in August
The latest CITF-funded report from Canadian Blood Services suggested that seroprevalence due to infection was 79.03% among Canadian blood donors in August 2023.
Seroprevalence due to infection stable at 80% in July
The latest CITF-funded report from Canadian Blood Services suggests that seroprevalence due to infection was stable at 80% among Canadian blood donors by the end of July.
Educating adults about COVID-19 vaccines is essential to promote vaccine confidence
A CITF-funded review, published in Campbell Systematic Reviews, found that among various strategies for promoting vaccine confidence, educational interventions were introduced to support individuals in their vaccine decisions by building COVID-19 vaccine knowledge and confidence. Group-based and formal presentations were the most frequently used.
Seroprevalence due to infection was 79.6% in May, similar to April
The latest CITF-funded seroprevalence report from Canadian Blood Services shows that approximately 79.6% of adult blood donors had infection-acquired seroprevalence in May, which is similar to April (79.4%).
People vaccinated against COVID-19 are more likely to neutralize Omicron than unvaccinated individuals
A CITF-funded study, published in Microbiology Spectrum, found that vaccinated donors, regardless of infection status, were more likely than unvaccinated donors to neutralize Omicron when assessed by a plaque reduction neutralization (PRNT50) assay.
Almost 80% of Canadian blood donors have infection-acquired antibodies against SARS-CoV-2
The latest CITF-funded seroprevalence report from Canadian Blood Services showed that approximately 80% of adult blood donors had infection-acquired seroprevalence in April, which is slightly higher than in March (78.8%). Younger donors (ages 17-24) continued to have the highest seroprevalence compared to other age groups.
Seroprevalence due to infection in blood donors also stabilized in March
The latest CITF-funded seroprevalence report from Canadian Blood Services showed that infection-acquired seroprevalence among Canadian adult blood donors was stable between February and March (78.7% in March, compared to 77.6% in February).
Most CanPath study participants had infection-acquired antibodies but few suspected COVID-19
Of the 62% of participants in a CanPath study who had infection-acquired antibodies, 86% had never suspected they had previously had COVID-19. These results from the CanPath SUPPORT-Canada study “Real-world insights on COVID-19 vaccine effectiveness and risk factors for COVID-19 infection” were made public during a hybrid event on May 30th.
HostSeq: A Canadian consortium collecting genetic data to identify risk factors for COVID-19 disease and health outcomes
The HostSeq platform, established in April 2020, is a national collaboration of population-based studies investigating genetic risk factors for SARS-CoV-2 disease and the health outcomes associated COVID-19.
Almost 90% of the youngest blood donors (aged 17-24) had antibodies due to infection by mid-March
Despite all donors having vaccine-induced antibodies, the latest CITF-funded seroprevalence report from Canadian Blood Services showed seroprevalence due to infection was 78.3% by mid-March, consistent with the continued presence of circulating Omicron subvariants.