• People infected with the Delta variant are more likely to spread the virus before symptoms have emerged, according to a new study. • People with the Delta variant can transmit it for almost two days ...

With so many areas in the United States with low vaccination rates, the spread of the Delta variant of the coronavirus will make it that much harder for the country to reach herd immunity, a top ...

Federal health guidance issued to help schools navigate reopenings and reduce COVID-19 transmission in classrooms, including universal masking regardless of vaccination status and layered mitigation ...

(Reuters) - As scientists race to understand the consequences of the Omicron COVID-19 variant, one of the most important questions is whether this new version of the coronavirus can outrun the ...