Learn about identifying flu symptoms, how the diagnosis works, common complications, and more.

Aug 13, 2024 · Understanding Influenza Flu is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs. It can cause mild to …

Aug 31, 2022 · This page includes links to information about the current flu season and past flu seasons, including current and past flu surveillance reports. Learn more about flu disease …

A weekly influenza surveillance report prepared by the Influenza Division. All data are preliminary...

Clinical guidance for specimen collection, testing, treatment, and vaccination at discharge for COVID-19 and influenza based upon local public health surveillance data and testing at local …

Aug 26, 2024 · Learn about identifying flu symptoms, how the diagnosis works, common complications, and more.

Oct 28, 2024 · Learn about the flu season, including how CDC track flu activity and when flu activity occurs and most often peaks.

Sep 17, 2024 · Influenza viruses can be detected in most infected persons beginning one day before symptoms develop and up to five to seven days after becoming sick. People with flu are most contagious during the first three days of their illness.

Aug 26, 2024 · Visit CDC's website to find out what to do if you get sick with flu. Learn about some of the similarities and differences between flu and COVID-19, and the difference between flu and the common cold. There are prescription medications called “flu antiviral drugs” that can be used to treat flu illness.

Aug 30, 2024 · If you get sick with flu symptoms, in most cases, you should stay home and avoid contact with other people except to get medical care. If you have emergency warning signs of flu sickness, you should go to the emergency room.