2019/20 年流感 A 型和 B 型病毒早期同时流行期间疫苗有效性的临时估计值，加拿大，2020 年 2 月。
Interim estimates of 2019/20 vaccine effectiveness during early-season co-circulation of influenza A and B viruses, Canada, February 2020.
机构信息
British Columbia Centre for Disease Control, Vancouver, Canada.
University of British Columbia, Vancouver, Canada.
出版信息
Euro Surveill. 2020 Feb;25(7). doi: 10.2807/1560-7917.ES.2020.25.7.2000103.
Interim results from Canada's Sentinel Practitioner Surveillance Network show that during a season characterised by early co-circulation of influenza A and B viruses, the 2019/20 influenza vaccine has provided substantial protection against medically-attended influenza illness. Adjusted VE overall was 58% (95% confidence interval (CI): 47 to 66): 44% (95% CI: 26 to 58) for A(H1N1)pdm09, 62% (95% CI: 37 to 77) for A(H3N2) and 69% (95% CI: 57 to 77) for influenza B viruses, predominantly B/Victoria lineage.
加拿大哨兵执业者监测网络的中期结果显示，在以甲型和乙型流感病毒早期共同循环为特征的季节，2019/20 流感疫苗对有医疗记录的流感疾病提供了实质性保护。总体调整后的疫苗有效性为 58%（95%置信区间：47 至 66）：甲型 H1N1pdm09 为 44%（95%CI：26 至 58），甲型 H3N2 为 62%（95%CI：37 至 77），乙型流感病毒为 69%（95%CI：57 至 77），主要是 B/Victoria 谱系。
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