The only rival for omicron in terms of known contagious viruses is the measles — and some argue it has surpassed measles in contagiousness
Source: Omicron variant of COVID-19 may be most contagious virus to ever exist
amnd I beleive tghis is before the .BA2 variant just startying to make news. perhaps 50% more infesctious (tranmissible ) as omicron og.
