The subvariant KP.3.1.1, which is a descendant of the Omicron variant, is the most prevalent virus as of December 2024. The COVID contagious period starts during the incubation period before ...

Studies on the Delta variant have reported an incubation period of 4.3 days, and studies on Omicron have reported an average incubation period of three to four days. COVID-19 testing can detect ...

Unlike common foodborne diseases, the incubation period can be long. The first incubation periods were documented during a large listeriosis outbreak published in 1987 by Linnan and al.

“The decisions being made by countries around the world to shorten the period of isolation for Omicron infections are based in part on the evidence obtained from modeling, but they also take ...