Communicable disease threats report, 1-7 December 2019, week 49

21 Nov 2024 - The 2023−2024 influenza season was a short flu season compared with the previous seasons, with sentinel positivity above the 10% threshold for 15 weeks compared with 25 weeks in 2022–2023.

20 Feb 2024 - Genetic and antigenic characterization data generated at the Worldwide Influenza Centre for viruses with collection dates after 31 January 2023 until 31 August 2023 informed the WHO influenza vaccine composition meeting (VCM) in September 2023 when recommendations were made for the southern hemisphere (SH) 2024 influenza season.

10 Jan 2024 - This report contains genetic and antigenic characterization data generated at the Worldwide Influenza Centre for viruses with collection dates after 31 January 2023 until 31 August 2023.