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Infection usually lasts for about a week, and is characterized by sudden onset of high fever, aching muscles, headache and severe malaise, non-productive. The virological data entered into flunet, e. g. · the most common symptoms of influenza (flu) include fever, a dry cough, headache, muscle and joint pain, a sore throat and a runny nose. The cough can be severe and can last two or more weeks. Influenza, or the flu, is both a seasonal and a pandemic virus. 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. Thankfully, the who global influenza surveillance and response system, or gisrs, monitors what viruses are circulating and … Influenza tends to spread rapidly in seasonal epidemics. Number of influenza viruses detected by subtype, are critical for tracking the movement of viruses globally and interpreting the epidemiological data. · seasonal influenza is an acute respiratory infection caused by influenza viruses which circulate in all parts of the world. It can cause mild to severe illness. Seasonal influenza is an acute respiratory infection caused by influenza viruses which circulate in all parts of the world. 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. The results are presented in. · 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. · who fact sheet on influenza: Influenza (flu) is a contagious respiratory illness caused by influenza viruses. Most people recover from fever and other symptoms. It is characterized by a sudden onset of fever, cough (usually dry), headache, muscle and joint pain, severe malaise (feeling unwell), sore throat and a runny nose. Includes key facts, definition, symptoms, transmission, seasonal epidemics, effects, prevention, who response. · 概述 季节性流感（流感）是由流感病毒引起的急性呼吸道感染。季节性流感在世界各地都很常见。大多数人不治而愈。 当人们咳嗽或打喷嚏时，流感很容易在人与人之间传播。接种疫苗是预防这种疾病的最佳方法。 流感的症状包括急性发烧、咳嗽、喉咙痛、身体疼痛和乏力。 治疗应以缓解症 … Every year, mainly during the winter season, seasonal influenza infects as many as 1 billion people. The virus is transmitted easily from person to person via droplets. This makes it one of the most common infectious respiratory viruses, after the common cold. Flunet is a global web-based tool for influenza virological surveillance first launched in 1997.
