SEOUL, South Korea — South Korea has added 397 new coronavirus cases, counting its tenth straight day of triple-digit increases as the speed of viral spread nears the levels the country saw during the worst of its outbreak in spring. The resurgence, which began in the densely populated capital area before spreading to practically every […]

Doctors checking comatose COVID-19 patients for signs of a stroke find instead a hit of how the coronavirus may harm the lungs