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Vox Sang . Influenza and COVID-19 vaccination in Canadian blood donors: A comparison across pre- and post-pandemic periods

tetano

Editor, Senior Moderator
Vox Sang


. 2025 Feb 27.
doi: 10.1111/vox.70006. Online ahead of print. Influenza and COVID-19 vaccination in Canadian blood donors: A comparison across pre- and post-pandemic periods

Sheila F O'Brien[SUP] 1 2 [/SUP], Lori Osmond[SUP] 1 [/SUP], Mindy Goldman[SUP] 3 4 [/SUP], Steven J Drews[SUP] 5 6 [/SUP]



Affiliations
Abstract

Background and objectives: Seasonal vaccinations reduce donor illness and appointment cancellations and ensure plasma products have antibodies to vaccine-directed strains. We aimed to describe donor influenza and COVID-19 vaccination history and compare this with the general population.
Materials and methods: Two online donor surveys were carried out in 2021 and 2024. Donors were asked about demographics, influenza (2019/2020, 2020/2021 and 2023/2024 seasons) and COVID-19 (ever and 2023/2024 season) vaccination and reasons for vaccination choices. General population vaccination statistics were extracted from public reports. Percentages of donors receiving vaccination were calculated with 95% confidence intervals. Multiple logistic regression models were fitted with demographics as independent variables.
Results: In survey 1, 4582 (30.4% response rate) donors completed a questionnaire; in survey 2, 6376 (21% response rate). More donors under age 65 received the influenza vaccine compared with the general population under age 65 (58% vs. 30% in 2019/2020, 63% vs. 28% in 2023/2024, p < 0.0001) and aged 65+ (81% vs. 70% in 2019/2020, 90% vs. 73% in 2023/2024, p < 0.0001). Fewer donors and the general population received the COVID-19 vaccine in 2023/2024 (under 65 45% vs. 39%; 65+ 76% vs. 67%, p < 0.0001). Most said they were vaccinated to prevent infection and protect others.
Conclusion: Seasonal vaccination rates are higher in older donors, consistent with public health recommendations. Blood donors are more likely to be vaccinated against seasonal influenza than the general population, but post-pandemic uptake of the COVID-19 booster vaccine was low, more similar to the general population.

Keywords: COVID‐19; SARS‐CoV‐2; blood donors; influenza; vaccination.

 
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