• H1N1 strains were collected from Hunan and Jiangsu provinces in early 2023 following the optimized COVID-19 strategy. • Phylogenic analysis revealed that the epidemic H1N1 viruses fell into different HA clades compared to vaccine strains. • Mutations on HA antigenic sites suggest antigenic drift in the epidemic H1N1 viruses versus vaccine strains. • A potential mismatch was found between recommended vaccine strains and the epidemic H1N1 viruses. • The expeditious, precise, and personalized vaccine update program for influenza virus may need to be put on the agenda.
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Source |
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11280127 | PMC |
| http://dx.doi.org/10.1016/j.virs.2024.05.003 | DOI Listing |
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