3 ms·
Only 4 known coronaviruses that cause a cold, anyway. While it'd be a bit surprising if there were more, HCoV-HKU1 was only discovered surprisingly recently.
by makomk 5y ago
Only 4 known coronaviruses that cause a cold, anyway. While it'd be a bit surprising if there were more, HCoV-HKU1 was only discovered surprisingly recently.