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Deaths. >290,000–650,000 deaths per year [3] [4] 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 in...
- 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...
- Flu season
Flu season is an annually recurring time period...
- Timeline
Overview. Year/period. Key developments. Before the 16th...
- Influenza a Virus
- Overview
- Symptoms
- Causes
- Risk Factors
- Complications
- Prevention
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" viruses that cause diarrhea and vomiting. Most people with the flu get better on their own. But sometimes, influenza and it...
At first, the flu may seem like a cold with a runny nose, sneezing and sore throat. Colds usually start slowly. But the flu tends to come on quickly. And while a cold can be miserable, you usually feel much worse with the flu. Common symptoms of the flu often — but not always — include a fever as well as aching muscles, chills and sweats. Other sym...
Influenza is caused by viruses. These viruses travel through the air in droplets when someone with the infection coughs, sneezes or talks. You can inhale the droplets directly. Or you can pick up the germs from touching an object, such as a computer keyboard, and then touching your eyes, nose or mouth. People with the virus are likely contagious fr...
Factors that may raise your risk of getting the flu or its complications include: 1. Age.Seasonal influenza tends to have worse outcomes in young children, especially those age 12 months and younger. Adults older than age 65 also tend to have worse outcomes. 2. Living or working conditions.People who live or work in facilities with many other resid...
If you're young and healthy, the flu usually isn't serious. Although you may feel awful while you have it, the flu usually goes away in a week or two with no lasting effects. But children and adults at high risk may develop complications that may include: 1. Pneumonia. 2. Bronchitis. 3. Asthma flare-ups. 4. Heart problems. 5. Ear infections. 6. Acu...
The U.S. Centers for Disease Control and Prevention (CDC) recommends annual flu vaccination for everyone age 6 months or older. The flu vaccine can lower your risk of getting the flu. The flu vaccine lowers your risk of having serious illness from the flu and needing to stay in the hospital due to flu. The flu vaccine also lowers your risk of dying...
Mar 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.
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.
Influenza (flu) is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and lungs. Some people, such as people 65 years and older, young children, and people with certain health conditions, are at higher risk of serious flu complications.
