Doctor's visits for flu symptoms are at a 15-year high. Why is this flu season so bad? Doctors discuss flu severity, symptoms and how to stay safe.

The winter flu season features two types of influenza. Here's what you need to know about them and how they differ.

The U.S. winter virus season is in full force, and by one measure is the most intense in 15 years.

H5N1 isn’t going away anytime soon and could become a pandemic. Here are some tips to help you understand your risk ...

As new viruses like COVID-19, bird flu, norovirus, and RSV (respiratory syncytial virus) continue to spread, vaccines have ...

The information was not reported as it usually is by the CDC, in a weekly breakdown of flu activity called FluView, but was added to a section that focuses on respiratory illnesses in general. Trends ...

The information was not reported as it usually is by the CDC, in a weekly breakdown of flu activity called FluView, but was added to a section that focuses on respiratory illnesses in general.

Given the increased morbidity and mortality of influenza in immunocompromised patients and the suboptimal response to influenza vaccination in these populations, novel strategies to increase ...

People who have not yet received the influenza vaccine are urged to do so immediately and to ensure their children have been vaccinated." The CDC recommends flu vaccination every year for everyone ...

According to the CDC, Bird flu is a disease caused by avian influenza A viruses that usually spread between birds, not people. Most human cases of bird flu in the U.S. have been mild so far ...

The post-holiday influenza spike across New Jersey shows ... the flu are most contagious during the first three days, the CDC said. In some cases, however, people can spread the flu even before ...