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Influenza (Flu) | CDC
Flu is a contagious respiratory illness that infect the nose, throat, and sometimes the lungs. Learn about the current flu season and find resources related to flu surveillance and past seasons. Learn more about who is at higher risk of developing potentially serious flu complications.
Influenza - Wikipedia
In healthy individuals, influenza is typically self-limiting and rarely fatal, but it can be deadly in high-risk groups. In a typical year, five to 15 percent of the population contracts influenza. There are 3 to 5 million severe cases annually, with up to 650,000 respiratory-related deaths globally each year.
Influenza (flu) - Symptoms and causes - Mayo Clinic
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 the "stomach flu" viruses that cause diarrhea and vomiting. Most people with the flu get better on their own.
About Influenza | Influenza (Flu) | CDC
Flu can cause mild to severe illness. Some people are at higher risk for more serious flu illness. Getting a flu vaccine has been shown to reduce the risk of flu and serious flu complications. Flu is a contagious respiratory illness caused by influenza viruses that infect tissues in the nose, throat, and sometimes the lungs.
Flu (Influenza): Causes, Symptoms, Types & Treatment
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).
Influenza (seasonal) - World Health Organization (WHO)
WHO fact sheet on influenza: includes key facts, definition, symptoms, transmission, seasonal epidemics, effects, prevention, WHO response.
Influenza: Causes, Symptoms, Diagnosis, and Treatment
Influenza is not just another cold—it is one of the most persistent and dangerous viral infections in human history, responsible for countless deaths and widespread outbreaks.
Influenza | Definition, Symptoms, Treatment, & Prevention ...
Influenza is an acute viral infection of the upper or lower respiratory tract, marked by fever, chills, and a generalized feeling of malaise. Seasonal influenza (the flu) is a major global health concern, causing annual epidemics with millions of severe cases and hundreds of thousands of deaths.
Influenza - Infectious Disease - Merck Manual Professional ...
Influenza - Etiology, pathophysiology, symptoms, signs, diagnosis & prognosis from the Merck Manuals - Medical Professional Version.
Influenza A virus - Wikipedia
Flu season is an annually recurring time period characterized by the prevalence of an outbreak of influenza, caused either by Influenza A or by Influenza B. The season occurs during the cold half of the year in temperate regions; November through February in the northern hemisphere and May to October in the southern hemisphere.
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