COVID-19 Novel Coronavirus 2019
Corona, crown in Latin languages.
C-OVID, Ovid's Metamorphoses
October to December, most places were likely infected already. (If we subscribe to germ theory).
Webster's 1828 Dictionary
Collin's English Dictionary
[1600–10; < Italian quarantina period of forty days, derivative of quaranta forty « Latin quadrāgintā]