Influenza, commonly known as the flu, is a contagious respiratory illness caused by the influenza virus. According to the Centers for Disease Control and Prevention (CDC), there are four types of flu ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. We've all heard of "the flu" but when it comes to types, subtypes and ...

Illinois is seeing a "notable increase" in hospital admissions for flu cases, according to state health officials, as levels of respiratory viruses continue to tick up. But which type of flu is ...

In a large study of 429,595 adults aged 65 years or older, adjuvanted and high-dose influenza vaccines showed no significant ...

There's no single explanation forthe high number of influenza A cases in Alberta in the past four months — nearly three times as many cases as the rest of the country, a provincial health official ...

Doctors and scientists say this year's influenza season could be tougher than usual. A new version of the flu virus, called H3N2, is spreading quickly. At the same time, fewer people are getting flu ...

In a striking real-world experiment, flu patients spent days indoors with healthy volunteers, but the virus never spread. Researchers found that limited coughing and well-mixed indoor air kept virus ...

With flu season right around the corner, when is the right time to get the influenza vaccine? For most people who only need one dose of the flu shot, September and October are generally the best times ...

The health ministry approved on Dec. 5 a test kit that can simultaneously detect COVID-19 and seasonal influenza as an ...

Under new Defense Department guidance, annual influenza vaccines are now voluntary for all active duty and reserve service members.