Incubation period is the time for symptoms to appear after infection. Symptoms typically appear 5.6 days after exposure. About 1 in 100 people may show symptoms after 14 days
Omicron has replaced Delta as dominant variant in US. Covid cases in US reached triple January peak levels. Omicron wave is more like flash flood than peak
International tourism grew 130% in January 2022, exceeding 2021's full recovery. World arrivals fell 67% below pre-pandemic levels in January 2022. Omicron variant and travel restrictions impacted recovery pace