The incubation period for the coronavirus is between 2 and 14 days. On average, COVID-19 symptoms appear around 5 days after exposure, but this can vary. Learn more.

Five years ago this week, the World Health Organization called the COVID-19 outbreak a pandemic. In the United States, officials declared a national emergency, triggering travel bans for non-U.S ...

SARS-CoV-2 is a positive-sense single-stranded RNA virus. It is contagious in humans and is the cause of the coronavirus disease 2019 (COVID-19). Leveraging viral genome sequencing for antiviral ...