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composition of influenza vaccines for 2020/2021 Due to the continuous genetic and antigenic changes of influenza viruses, recommendations for the composition of the vaccine is updated by WHO twice a year for the northern and southern hemisphere, respectively.
Sep 29, 2023 · Seasonal influenza activity. From February through August 2023, influenza activity was reported in all zones and the number of detections was comparable to the same reporting period in 2022. However, the predominant virus varied among transmission zones5 and between countries.
A recommendation will be made in February 2023 relating to vaccines that will be used for the NH 2023-2024 influenza season. For countries in tropical and subtropical regions, WHO recommendations for influenza vaccine composition (NH or SH) are available on the WHO Global Influenza Programme website3. Seasonal influenza activity.
Please note that influenza vaccines supplied through the Alberta Influenza Immunization Program and COVID-19 vaccines can be administered at the same time. Spacing of 14 days is only required between administration of the COVID-19 vaccine and LIVE vaccines such as Flumist®.
Methods: Test-negative case-control study. Enrollees: Outpatients aged 6 months – 64 years with acute respiratory illness with cough ≤7 days duration. Dates of enrollment: December 2, 2022 – February 10, 2023. Nasal and oropharyngeal swabs tested for influenza and SARS-CoV-2.
As announced in the Concept paper,1 the revision of the guidelines on influenza vaccines has been organised with the aim of developing a consolidated influenza guideline that covers the regulatory, quality, non-clinical and clinical aspects of influenza vaccine development and dossier submission.
National Influenza Vaccine. Modernization Strategy. 2020-2030. EXECUTIVE SUMMARY. Influenza poses a serious threat to national security and public health. Each year, seasonal influenza results in hundreds of thousands of hospitalizations and tens of thousands of deaths in the United States.
