Confirmed COVID-19 cases are up week-over-week, according to CDC data. Here's what to know the week of Aug. 25.

COVID-19 viral activity was high in the United States during the first week of September, according to fresh data from the Centers for Disease Control and Prevention. Some regions of the United States ...

Add Yahoo as a preferred source to see more of our stories on Google. A new COVID variant is dominant in the US: What are its symptoms? As COVID-19 infections start to rise across the country, a new ...

Genetic inheritance may sound straightforward: One gene causes one trait or a specific illness. When doctors use genetics, it’s usually to try to identify a disease-causing gene to help guide ...