OMICRON infection within Kaiser Permanente Southern California healthcare system from November 30, 2021 to January 1, 2022; zero cases with Omicron variant infection received mechanical ventilation
by Paul Alexander
3rd and 4th column of the table shown here is Delta vs Omicron, see deaths and mechanical ventilation and ICU; BA.2 'stealth' OMI vs BA.1 initial variant; no increased lethality etc. (WHO)
The WHO, which was among the first prominent bodies to raise concern over the new strain, created a chart outlining its current thinking about BA.2, which indicates its real departure from other variants is, indeed, in transmissibility.