Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Before germs were first spied under a microscope by Robert Koch, a ...

Learn more about the common cold, the viruses that cause it, and why it’s so difficult to find a vaccine for it.

The common cold is a viral infection that affects the upper respiratory tract, which includes your nose and throat. It's been dubbed the common cold for good reason. On average, adults in the U.S. get ...

Fidelma Fitzpatrick does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations ...