Animal "reservoirs" may pose a risk to humans down the road.
There's about a 2.5 per 1 million chance of developing a severe allergic reaction to Moderna's coronavirus vaccine.
All that sanitizer people have been using since the start of the COVID-19 epidemic has led to more than just dry hands and eye-watering smells: It's nearly blinding some children.
A new coronavirus variant has been found in multiple California outbreaks, but scientists aren't yet sure whether it's more transmissible than other strains.
One day, the pandemic will end. Scientists don't know how that finale will play out but a new model offers a teaser.
A little over a year after the World Health Organization first announced a string of mysterious illnesses, the agency will travel to their point of origin to investigate how it all started.
A key mutation increase the ability of the virus to bind to human cells, but Pfizer's vaccine still works against it.
A coronavirus variant identified in South Africa may not be as vulnerable to COVID-19 vaccines as other strains, some scientists say.