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Influenza, commonly known as "the flu" or just "flu", is an infectious disease caused by influenza viruses. Symptoms range from mild to severe and often include fever , runny nose , sore throat , muscle pain , headache , coughing , and fatigue .
- Influenza a Virus
Influenza A virus ( IAV) is a pathogen that causes the flu...
- Influenza D Virus
Influenza D virus is a species in the virus genus...
- Influenza B Virus
Influenza B virus is the only species in the genus...
- Influenza pandemic
An influenza pandemic is an epidemic of an influenza virus...
- Influenza a Virus
Influenza A virus ( IAV) is a pathogen that causes the flu in birds and some mammals, including humans. [1] It is an RNA virus whose subtypes have been isolated from wild birds. Occasionally, it is transmitted from wild to domestic birds, and this may cause severe disease, outbreaks, or human influenza pandemics.
- Alphainfluenzavirus
- Orthomyxoviridae
An influenza pandemic is an epidemic of an influenza virus that spreads across a large region (either multiple continents or worldwide) and infects a large proportion of the population.
Mar 22, 2024 · Print. What is Influenza (Flu)? 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 lead to death. The best way to prevent flu is by getting a flu vaccine each year. Flu Symptoms.
Mar 30, 2023 · 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 winter in the United States. Influenza A viruses are the only influenza viruses known to cause flu pandemics (i.e., global epidemics of flu disease).
Oct 3, 2023 · Overview. 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 spreads easily between people when they cough or sneeze. Vaccination is the best way to prevent the disease.
Dec 2, 2022 · Seasonal Flu. About Flu. Understanding Flu Viruses. Español | Other Languages. Print. Influenza (Flu) Viruses. There are two main types of human flu viruses: types A and B. The flu A and B viruses that routinely spread in people are responsible for seasonal flu epidemics each year.
