Learn about the current flu season and find resources related to flu surveillance and past seasons.

+ Learn how laboratories can enroll in the National Respiratory and Enteric Virus Surveillance System (NREVSS)

1 day ago · This flu season continues to break records as the state Health Department reported Friday it had recorded the highest number of hospitalizations in one week since data collection started more …

Jul 15, 2025 · In the United States, the main flu season stretches from October to March. Cases of the flu peak between December and February, according to the CDC. But you can get the flu at any time …

Feb 28, 2024 · What is the flu? The flu, also called influenza, is a respiratory infection caused by viruses. Each year, millions of Americans get sick with the flu. Sometimes it causes mild illness. But it can …

Dec 19, 2025 · 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 …

1 day ago · FluSTAR data is gathered through several surveillance methods, including rapid assay data, laboratory confirmation and clinical diagnosis data. A resulting 12-point cold & flu severity index is …

Flu season — when cases of the flu go up dramatically — in the Northern Hemisphere (which includes the U.S.) is October through May. The highest number of cases (peak) usually happen between …

3 days ago · Before the flu bug bites, getting the shot — available at doctors’ offices, pharmacies and urgent care centers — can help ensure that this winter is defined by prevention rather than crisis.

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, …