(CNN) — This Delta variant could be the last major surge of the Covid-19 pandemic, but now is not the time for the US to grow complacent as it has yet to run its course, an expert said Monday. “We ...

New research from the Centers for Disease Control and Prevention and health officials in California and New York indicates that a prior case of Covid-19 protected people from infection better than ...

Rates of a rare inflammatory condition tied to Covid-19 in children appear to have dropped in some parts of the country — an unexpected development for many doctors who had been bracing for a rise in ...

A new study reveals that there were fewer cases of multi-system inflammatory syndrome in children (MIS-C) during the omicron wave of the pandemic than the delta wave. A new University at Buffalo study ...

Delta wave activity disruption during sleep may be a useful metric to identify those at an increased risk for cardiovascular disease and cardiovascular mortality. An international team of researchers ...