Table 1 Vaccine strains recommended by WHO for northern hemisphere from 2019–2021 and vaccination details
From: Factors affecting the immunogenicity of influenza vaccines in human
Influenza season | Vaccine strains | Vaccine type | Vaccinated number |
|---|---|---|---|
2019–2020 |  A/Brisbane/02/2018 (H1N1)pdm09-like virus | TIV | 179 |
A/Kansas/14/2017 (H3N2)-like virus | |||
B/Colorado/06/2017-like virus (B/Victoria/2/87 lineage) | |||
B/Phuket/3073/2013-like virus (B/Yamagata/16/88 lineage) | |||
2020–2021 |  A/Guangdong-Maonan/SWL1536/2019 (H1N1)pdm09-like virus | TIV | 214 |
A/Hong Kong/2671/2019 (H3N2)-like virus | |||
B/Washington/02/2019 (B/Victoria lineage)-like virus | |||
B/Phuket/3073/2013 (B/Yamagata lineage)-like virus. | |||
2021–2022 |  A/Victoria/2570/2019 (H1N1)pdm09-like virus | QIV | 164 |
A/Cambodia/e0826360/2020 (H3N2)-like virus | |||
B/Washington/02/2019 (B/Victoria lineage)-like virus | |||
B/Phuket/3073/2013 (B/Yamagata lineage)-like virus |