South Korea reported on Friday that 91 recovered coronavirus patients have tested positive for the disease again, raising questions over health experts’ understanding of the pandemic. The prospect of people being re-infected with the virus is of international concern, as many countries are hoping that infected populations will develop sufficient ...
A new study examining air samples from hospital wards with COVID-19 patients has found the virus can travel up to 13 feet (four meters) — twice the distance current guidelines say people should leave between themselves in public. The preliminary results of the investigation by Chinese researchers were published Friday ...
