Dec 19, 2025 · Overview Flu, also called influenza, is an infection of the nose, throat and lungs, which are part of the respiratory system. The flu is caused by a virus. Influenza viruses are different from …

Feb 28, 2025 · WHO fact sheet on influenza: includes key facts, definition, symptoms, transmission, seasonal epidemics, effects, prevention, WHO response.

Oct 8, 2025 · I think I have the flu, also called influenza. Should I see my doctor? Call your healthcare professional if you think you have the flu and you or someone you're caring for is at high risk of …

Nov 30, 2025 · Seasonal influenza (‘the flu’) is an acute respiratory infection caused by influenza viruses that circulate globally and year-round. It can cause illness ranging from mild to severe, sometimes …

Dec 19, 2025 · Descripción general La gripe, también llamada influenza, es una infección de la nariz, la garganta y los pulmones, que son parte del sistema respiratorio. La gripe es causada por un virus. …

Dec 19, 2025 · Diagnosis Flu vaccines at Mayo Clinic Mayo Clinic offers flu shots in Arizona, Florida and Minnesota. Learn more about how to get your flu shot at Mayo Clinic. To diagnose the flu, also called …

Dec 19, 2025 · 病因 流感是由病毒引起的。当感染者咳嗽、打喷嚏或讲话时，这些病毒会以飞沫的形式在空气中传播。您可能直接吸入飞沫，也可能因为触摸电脑键盘等物体、然后触摸眼睛、鼻子或口腔而 …

Mar 25, 2025 · Seasonal influenza is an acute respiratory infection caused by influenza viruses which circulate in all parts of the world. It is characterized by a sudden onset of fever, cough (usually dry), …

Nov 27, 2009 · Symptoms Influenza is characterized by a sudden onset of high fever, cough, headache, muscle and joint pain, malaise, and a runny nose lasting 2 to 7 days. Influenza is usually mild and …

Dec 19, 2025 · Influenza (flu) is a respiratory illness caused by influenza viruses that spreads easily through close contact with an infected person. The virus can be passed on from an infected person’s …