As Covid-19 cases rise again in nursing homes, a few states have begun requiring visitors to present proof that they’re not infected before entering facilities, stoking frustration and dismay among ...

Experts say testing can identify potential outbreaks among the most vulnerable. Governors in Maryland and Tennessee this week began requiring faster and more comprehensive coronavirus testing in ...

The country is beginning to reopen even as most states have not met public health officials' metrics for doing so safely. In that risky situation, the best, most feasible way to protect the most ...