New COVID studies show varied viral clearance time in patients with lower immunity Two new studies show immune-compromised patients, including those with cancer and HIV, have varied times until they clear the virus, with some at increased risk for persistent COVID-19 infections. CIDRAP

...

We were specifically looking at who was at risk for prolonged infection, such that they never cleared the virus," said lead study author Adam Lauring, MD, PhD in a press release. "In contrast to a lot of case reports, we were finding that very few people had prolonged infection."

...