COVID-19 cases are rising in half of U.S. states. What to know about COVID trends and the new Stratus and Nimbus variants.

According to a Johns Hopkins report, several virological, behavioural, and environmental factors drive summer Covid-19 waves.

CDC researchers project new COVID-19 cases to rise in May due to the U.K. strain circulating. This comes as new infections emerge despite widespread vaccinations. Officials advise public health ...

COVID-19 is rising again in California, driven by new variants like “Nimbus,” amid a nationwide summer wave. Despite “low” overall activity, wastewater data and ER visits indicate a growing trend.

As COVID-19 variants are "a growing proportion" of cases across the US — and we could see "another avoidable surge" of the virus like Europe if mitigation efforts go out the window, the director ...

Amid Surge In COVID-19 Cases, CDC Has More Advice For How To Stay Safe Some parts of the country are seeing an increase in coronavirus cases. At the same time, many states are reopening gyms and ...

CDC Director Rochelle Walensky was near tears on Monday warning of a new surge in COVID-19 cases. "Right now I'm scared," Walensky said at the White House's COVID-19 briefing.

United and Delta said they would cancel dozens of flights on Christmas Eve, citing staff shortages from the omicron-fueled surge in cases sweeping the country. FDA regulators have now authorized ...

Experts say Covid-19 vaccinations in the United States are going extremely well – but more people need to be protected and the country may be at the start of another surge.

The US risks a fourth surge of COVID-19 cases if people don't follow public-health recommendations, according to the top official at the Centers for Disease Control and Prevention.

Dr. Rochelle Walensky, director of the Centers for Disease Control and Prevention, said Monday that she’s worried the US could see “another avoidable surge” of Covid-19 if mitigation ...