After dodging COVID-19 several times during the pandemic, flight attendant Angeliki Kaoukaki wondered if she was a medical anomaly. But she’s possibly among a small group of people who might ...

Some COVID-19 patients have experienced silent hypoxia, a condition causing low oxygen levels (without obvious symptoms). This condition can be fatal.

The spike protein of the coronavirus, or SARS-CoV-2, binds to a receptor on the host cells, called ACE2, which allows the virus to enter the cells and infect it. Binding is the first step for ...

SARS-CoV-2 is a positive-sense single-stranded RNA virus. It is contagious in humans and is the cause of the coronavirus disease 2019 (COVID-19). Stem cells are highly resistant to viral infection ...