http://www.newsweek.com/what-incubation-period-omicron-how-long-contagious-covid-variant-1662497 > Scientists are still working to gather data on the Omicron variant and there is much we still don't know about it, but some have suggested that it might possibly have a shorter incubation period than earlier variants. > An incubation period refers to the time it takes between someone getting exposed to a causative agent, like a virus, and for symptoms to show up.