I see. Not an ideal situation, then.
In other news, in the world of preprints... (https://www.medrxiv.org/content/10.1101/2022.01.05.22268782v1.full.pdf)
It looks like, consistent with South African data, that previous infection still protects decently against Omicron (55-60%) and around 88% vs. hospitalizations, same as the other variants. It looks like at this point that previous infection is more comparable to having had three doses rather than two, then. Countries with low infections before Omicron should take note and speed up boosters to the vulnerable.