COVID-19 cases are rising again in the United States, and the "stratus" variant might be to blame. The big picture: A summer outbreak of COVID-19 cases isn't a shocker. But it's arriving before ...

COVID-19 cases continue to climb week-over-week as summer draws to a close, according to U.S. health data. Some regions of the United States are experiencing higher rates of positive COVID-19 tests ...

As the weather cools and fall approaches, COVID-19 cases are still spiking in much of the United States. The country has yet to emerge from a late summer COVID wave driven by the highly contagious new ...

COVID-19 vaccination showed effectiveness in reducing hospitalizations and severe disease outcomes associated with the SARS-CoV-2 JN.1 lineage, according to a recent study published in JAMA Network ...

The more contagious Delta variant of Covid-19 now makes up 83% of sequenced samples in the United States, US Centers for Disease Control and Prevention Director Dr. Rochelle Walensky said Tuesday.

COVID-19 cases remained relatively steady week-over-week in late August, though data from states showed "very high" viral activity at the end of the month, according to the Centers for Disease Control ...