2025年2月28日 · The World Health Organization (WHO) today announced the recommendations for the viral composition of influenza vaccines for the 2025–2026 influenza season in the northern hemisphere. The announcement was made at an information session at the end of a 4-day meeting on the Composition of Influenza Virus Vaccines, a meeting that is held twice annually.

2024年2月23日 · The World Health Organization (WHO) today announced the recommendations for the viral composition of influenza vaccines for the 2024-2025 influenza season in the northern hemisphere. The announcement was made at an information session after a 4-day meeting on the Composition of Influenza Virus Vaccines. The meeting is held twice annually, once for the southern and once for the northern ...

During the 1947 flu season, researchers discovered that existing vaccines were ineffective against the flu viruses circulating at the time. To investigate the viruses in circulation, the World Health Organization (WHO) established the Worldwide Influenza Centre in 1948 and the Global Influenza Surveillance and Response System (GISRS) in 1952.

Fact: Several flu viruses are circulating all the time, which is why people may still get the flu despite being vaccinated since the vaccine is specific to one strain. However, being vaccinated improves the chance of being protected from the flu. This is especially important to stop the virus affecting people with vulnerable immune systems.

2018年10月21日 · Influenza can cause severe disease and death, especially in older people, young children, pregnant women and people with long-term health conditions such as diabetes, heart disease or chronic obstructive pulmonary disorder.

2023年2月24日 · The World Health Organization (WHO) today announced the recommendations for the viral composition of influenza vaccines for the 2023-2024 influenza season in the northern hemisphere.

2024年9月27日 · The World Health Organization (WHO) today announced the recommendations for the viral composition of influenza vaccines for the 2025 influenza season in the southern hemisphere. The announcement was made at an information session after a 4-day meeting on the Composition of Influenza Virus Vaccines. The meeting is held twice annually, once for the southern and once for the northern hemisphere.

We provide Member States with strategic guidance, technical support and coordination of activities essential to make their health systems better prepared against seasonal, zoonotic and pandemic influenza threats to populations and individuals.

2024年2月23日 · Overview . The WHO recommends that trivalent vaccines for use in the 2024-2025 northern hemisphere influenza season contain the following:

Seasonality in the Tropics and Subtropics. Seasonality (number of peaks, period and start and end month of increased influenza activity) was assessed by different analytic approaches using FluNet and national influenza surveillance data for 70 of the 138 countries representing about 73% of the world’s population.