Influenza (flu) - Symptoms and causes - Mayo Clinic
WebJan 10, 2024 · 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 is commonly called the flu, but it's different from the stomach "flu" …
Influenza (Seasonal) - World Health Organization (WHO)
WebOct 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 spreads easily between people when they cough or sneeze. Vaccination is the best way to prevent the disease.
Types of Influenza Viruses | CDC
WebMar 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).
Influenza (Flu) | CDC
WebMay 8, 2024 · Influenza Updates: Seasonal influenza activity continues to decline in most areas of the country. CDC continues to recommend vaccination as long as flu viruses are spreading. There are antiviral drugs to treat flu illness.
Key Facts About Influenza (Flu) | CDC
WebMar 22, 2024 · 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.
Influenza - Wikipedia
WebInfluenza, 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 - National Institute of Allergy and Infectious Diseases …
WebInfluenza viruses infect the nose, throat, and lungs and produce symptoms that include sudden fever, extreme fatigue, coughing, chills, and muscle aches. Serious complications include pneumonia. Each year, flu causes millions …
Influenza (seasonal) - World Health Organization (WHO)
WebMar 30, 2024 · Overview. More. Seasonal influenza is an acute respiratory infection caused by influenza viruses which circulate in all parts of the world. It represents a year-round disease burden. It causes illnesses that range in severity and sometimes lead to hospitalization and death.
Flu (Influenza): Causes, Symptoms, Types & Treatment - Cleveland Clinic
WebOct 11, 2022 · What is the flu (influenza)? The flu is an illness you get from the influenza virus. It causes symptoms like head and body aches, sore throat, fever and respiratory symptoms, which can be severe. Flu is most common in winter months, when many people can get sick at once (an epidemic). When is flu season?
Influenza - Infectious Diseases - Merck Manual Professional Edition
WebSymptoms and Signs |. Diagnosis |. Prognosis |. Treatment |. Prevention |. Key Points. Influenza is a viral respiratory infection causing fever, coryza, cough, headache, and malaise.
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