Types of Influenza Viruses | Influenza (Flu) | CDC
Sep 18, 2024 · There are four types of influenza viruses: A, B, C, and D. Influenza A and B viruses cause seasonal epidemics of disease in people (known as flu season) almost every …
Flu (Influenza): Causes, Symptoms, Types & Treatment - Cleveland Clinic
The flu is a common respiratory illness you get from the influenza virus. Symptoms often include fever, head and body aches, coughing and a stuffy or runny nose. You’re at risk for serious …
Influenza (flu) - Symptoms and causes - Mayo Clinic
Dec 3, 2024 · 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 …
Influenza (Seasonal) - World Health Organization (WHO)
Oct 3, 2023 · Seasonal influenza (the flu) is an acute respiratory infection caused by influenza viruses. It is common in all parts of the world. Most people recover without treatment. Influenza …
Influenza - Wikipedia
Influenza, commonly known as the flu, is an infectious disease caused by influenza viruses. Symptoms range from mild to severe and often include fever, runny nose, sore throat, muscle …
About Influenza | Influenza (Flu) | CDC - Centers for Disease …
Aug 13, 2024 · Flu is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs. It can cause mild to severe illness, and at times can …
Influenza (Flu) | Influenza (Flu) | CDC - Centers for Disease …
Influenza (flu) is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and lungs. Learn about flu, including symptoms, prevention methods, and treatment …
Influenza | Definition, Symptoms, Treatment, & Prevention
Dec 28, 2024 · influenza, an acute viral infection of the upper or lower respiratory tract that is marked by fever, chills, and a generalized feeling of weakness and pain in the muscles, …
Influenza - National Institute of Allergy and Infectious Diseases …
Dec 31, 2024 · Seasonal influenza, or flu, is a highly contagious respiratory illness caused by influenza viruses that infect the nose, throat and lungs. The two main types of influenza …
Influenza - Nature Reviews Disease Primers
Jun 28, 2018 · Influenza is an infectious respiratory disease that, in humans, is caused by influenza A and influenza B viruses. Typically characterized by annual seasonal epidemics, …