It can cause mild to severe illness. Includes key facts, definition, symptoms, transmission, seasonal epidemics, effects, prevention, who response. This makes it one of the most.
The most common symptoms of influenza (flu) include fever, a dry cough, headache, muscle and joint pain, a sore throat and a runny nose. Seasonal influenza is an acute respiratory infection caused by influenza viruses which circulate in all parts of the world. Influenza (flu) is a contagious respiratory illness caused by influenza viruses.
Influenza, or the flu, is both a seasonal and a pandemic virus. Every year, mainly during the winter season, seasonal influenza infects as many as 1 billion people. All of us might be potentially affected by the flu. It is characterized by a sudden onset of fever, cough.
The flu happens every year, worldwide. The virus is transmitted easily from person to person via droplets. The best way to avoid getting the flu is to get the flu vaccine every year. Who fact sheet on influenza:
It can cause illness ranging from mild to severe,. Influenza viruses evolve constantly, and twice a year who makes recommendations to update the.