As flu season worsens globally, infections and hospitalizations are rising rapidly. This year’s outbreak is more severe, with ...

Flu takes one to four days to incubate in your system after you come into contact with the virus. You have the potential to ...

An infectious disease MD explains for how long you're likely to transmit the flu to others, with her advice for preventing viral infection.

Schools around the U.S. are closing due to surges of flu and other illnesses which are sickening students and staff. Here's ...

Cases of the flu viruses continue to surge across the U.S., placing a strain on healthcare systems and causing tens of millions of illnesses and thousands of deaths each year. Each flu season ...

Flu cases are spiking in Western Pennsylvania as the region’s doctors treat high numbers of patients stricken with the ...