2024年9月18日 · Understanding the stages of the flu—including the signs and symptoms that are likely to develop—can help you determine if you are recovering as you should. It can also help …

2025年3月3日 · Beginning in late January and extending through February 2025, flu hospitalizations have been higher than any other week since before 2009. Most flu cases appear to be from influenza A strains, with a split between influenza A/H3N2 and influenza A/H1N1. These are two different subtypes of the influenza A virus.

Influenza, commonly known as the 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. These symptoms begin one to four (typically two) days after exposure to the virus and last for about two to eight days.

2025年2月28日 · Two types of influenza A viruses — H1N1 and H3N2 — have dominated this year’s flu season, according to the CDC. Some experts, including Donelan, say these strains tend to spread more quickly and...

2025年1月28日 · 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 …

2024年8月26日 · Learn about identifying flu symptoms, how the diagnosis works, common complications, and more.

2025年2月28日 · 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.

2024年9月18日 · 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).

2022年10月11日 · 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). Cleveland Clinic is a non-profit academic medical center.

2025年2月3日 · There are some notable differences between flu A and flu B strains. On the heels of a post-holiday COVID surge, flu cases and hospitalizations are ticking upwards. Flu cases didn't start to...