Time from infection to COVID symptoms shortens with each new variant, study finds
By
Alicia Lasek
Aug 24, 2022
The average incubation period of SARS-CoV-2 has gradually shortened, from 5 days to 3.4. Determining incubation periods can help to pinpoint effective patient isolation periods, investigators say.
Omicron BA.2 subvariant tied to less severe illness than delta, original omicron
Oct 28, 2022
Mortality rates are lower for omicron BA.2 than for delta variant and early omicron, investigators report.