Influenza (Flu) | CDC 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 options
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
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
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)
Flu (Influenza) - Harvard Health Influenza (the flu) is a respiratory infection It is caused by the influenza virus Influenza typically is spread by air or by direct contact from one person to another Influenza virus is very contagious Most influenza cases occur during epidemics Epidemics usually peak during the winter months
Influenza | Definition, Symptoms, Treatment, Prevention | Britannica 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
Flu (Influenza): Symptoms, Causes, Treatment, and More What is the flu? Influenza (the flu) is a common, infectious virus spread by droplets that enter another person’s body From there, the virus takes hold and begins to develop
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