Yearly vaccination for influenza concept icon. Clinic appointment. Family vaccination concept for immunity health. Doctor pediatrician makes an injection of flu vaccine to a child in hospital.

1 Introduction. The initial human instance of H5N6 influenza was documented in Sichuan Province in 2014, with a resurgence occurring in 2021. By December 31, 2024, there had been 16 documented cases ...

1 Introduction. Influenza viruses are the causative agent of pandemic influenza. In a typical influenza outbreak year, influenza can cause up to 5 million severe cases and 500,000 deaths ().To this ...