Slimy snot is an important part of how your immune system wards off germs and fights back from infection.
Vaccinated people can still get infected with the coronavirus. So if you have symptoms of COVID-19, getting tested can protect others and help health officials keep an eye on the virus.
Aerosols are the tiny particles of liquid and material that float around in our environment. When they come from an infected person, they may be a significant source of coronavirus transmission.
The coronavirus, like many infectious diseases, can live and spread on inanimate objects in the world around us. An epidemiologist explains how and gives some advice on how to minimize the risk.
Leaving your coat at home on a cold winter day doesn't automatically mean you're going to get sick. But it could make you more susceptible to germs.
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