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Tag: Canadian Sentinel Practitioner Surveillance Network

Topic: vaccinesView all posts for the topic: vaccines

Fall COVID-19 vaccine cut illness risk by half overall

Published February 22, 2024

Still COVIDing Canada Posts

Published by: Globe and Mail
Published on:
By Kelly Grant

The fall COVID-19 vaccine cut the risk of COVID-19 illness by about half overall, and by 67 per cent for those with a previous infection, according to new research from the Canadian network that has long tracked the performance of the annual flu shot.

This is the first time the Canadian Sentinel Practitioner Surveillance Network, which is comprised of hundreds of primary care providers in British Columbia, Alberta, Ontario and Quebec, produced mid-season estimates of the effectiveness of immunization against COVID-19.

Continue readingFall COVID-19 vaccine cut illness risk by half overall
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Topic: vaccinesView all posts for the topic: vaccines

Canadian data show moderate to good vaccine efficacy against COVID, flu

Published February 19, 2024

Still COVIDing Canada Posts

Published by: CIDRAP
Published on:
By Mary Van Beusekom

The Canadian Sentinel Practitioner Surveillance Network (SPSN) data reveal mid-season vaccine effectiveness (VE) against the SARS-CoV-2 Omicron XBB.1.5 variant of 47% against medically attended outpatient COVID-19 and 67% among previously infected people.

The same test-negative case-control study reports that the flu vaccine is 63% effective against medically attended outpatient infection with the influenza A H1N1 strain and 40% against H3N2.

The researchers enrolled patients with new or worsening cough that is characteristic of acute respiratory illness (ARI) who sought care within 7 days of symptom onset from community-based sentinel practitioners in Alberta, British Columbia (BC), Ontario, or Quebec.

Continue readingCanadian data show moderate to good vaccine efficacy against COVID, flu
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