Comment Comment by nradov This is probably what happened with another similar coronavirus, HCoV-OC43.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252012/The initial pandemic killed a lot of people. Now most of us get infected when we're young and build up natural immunity. parent nradov 5 years ago
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7252012/
The initial pandemic killed a lot of people. Now most of us get infected when we're young and build up natural immunity.