Prior infection with Covid-19 gave at least as much protection from a repeat bout of the coronavirus as vaccination during the rise of the delta variant, according to a U.S. government study.

Federal judges are considering the legality of the Biden administration’s use of a Trump-era border policy that allows the immediate expulsion of many migrants attempting to cross into the U.S. during the Covid-19 pandemic.

The Biden administration’s vaccine mandate for health workers is now enforceable across the U.S. after a federal court Wednesday dismissed a lawsuit filed by Texas, the only state that didn’t have to comply following a U.S. Supreme Court decision.

Two Supreme Court justices issued a rare statement Wednesday over what is for many Americans a common refrain -- whether their coworkers should wear a mask.

Coronavirus cases and hospitalizations are substantially lower among those who have both been vaccinated and survived a previous infection, according to a study released Wednesday by the New York State Health Department and the Centers for Disease Control and Prevention.

New Jersey Governor Phil Murphy is requiring all workers in health-care settings and high-risk congregate-living facilities to be fully Covid-19 vaccinated and boosted, and is eliminating a test-out option.