A new year might mean new viral threats. Old viruses are constantly evolving. A warming and increasingly populated planet puts humans in contact with more and different viruses. And increased mobility ...

Bacteria and viruses are often lumped together as germs, and they share many characteristics. They’re invisible to the human eye. They’re everywhere. And both can make us sick. Bacteria and viruses ...

Suddenly they appear and -- like the SARS-CoV-2 coronavirus -- can trigger major epidemics: Viruses that nobody had on their radar. They are not really new, but they have changed genetically. In ...

VIVIAN, LA - DECEMBER 12: With a temperature of 103.8, Asa Moore, 6, of Vivian, Louisiana is examined by John Messier, a physician's assistant, at the North Caddo Surgical and Medical Center for ...

While current flu shots need to be updated each season, scientists are finding new ways to make vaccine that could last much longer and cover more strains.

A giant virus discovered in Japan is adding fuel to the provocative idea that viruses helped create complex life. Named ushikuvirus, it infects amoebae and shows unique traits that connect different ...

If you're feeling unwell this season, it may not be easy to tell exactly what is making you sick; multiple viruses are circulating in Michigan this winter, making vaccination and healthy habits ...

Although flu and stomach flu sound similar, they are caused by different viruses and have different symptoms and treatment. People sometimes confuse flu and stomach flu because of their similar names.