2024年10月28日 · In the United States, flu season usually occurs in the fall and winter. While influenza viruses spread year-round, most of the time flu activity peaks between December and February. The overall health impact (e.g., infections, hospitalizations, and deaths) of flu varies from season to season.

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.

Flu season is an annually recurring time period characterized by the prevalence of an outbreak of influenza (flu). The season occurs during the cold half of the year in each hemisphere. It takes approximately two days to show symptoms. Influenza activity can sometimes be predicted and even tracked geographically.

2024年9月17日 · Seasonal flu vaccines are designed to protect against the influenza viruses that research indicates will be most common during the upcoming season. Beginning again in 2024-2025, all flu vaccines in the United States will be "trivalent" vaccines, which means they protect against three different influenza viruses: an influenza A(H1N1) virus, an ...

2022年8月31日 · Find information on the 2022-2023 flu season, including vaccine composition, timing, and provider gu...

Seasonal influenza, or flu, is an airborne respiratory virus that occurs every year in the fall to early spring in the United States. The virus is highly contagious and symptoms can run from mild to severe. In some populations (very young, individuals with chronic comorbid conditions, immunocompromi …

2025年2月28日 · There have been at least 37 million illnesses, 480,000 hospitalizations and 21,000 deaths from flu so far this season, according to CDC estimates. The worst flu season the United States has...

2025年3月5日 · Influenza strains vary from year to year, but one thing remains constant: everyone six months and older should get an annual flu shot. Influenza vaccination remains one of the best preventive measures for containing the spread and severity of flu.

2019年4月30日 · Seasonal influenza is a contagious respiratory disease caused by an influenza virus. It is not the same as a common cold. Influenza is characterized by a sudden onset of fever, cough (usually dry), headache, muscle and joint pain, severe malaise (feeling unwell), a sore throat and a runny nose.

2024年11月19日 · Flu viruses typically spread in fall and winter, with activity peaking between December and February. Every flu season is different, and the substantial health impacts can vary widely from...