It seems to give partial protection to Delta like 50% reduction in infections.
Different aspects of immunity seem to last different times. Antibodies fade over six months or so but T Cell immunity can last decades in general. Though obviously Omicron hasn't been around that long to check on.
Re:Omicron at 100% Prevalence, Colorado
by TranquilMarmot on Thursday January 06, 2022 @02:16PM
(#29828465)
> to what extent does recovering from Omicron prevent Delta?'
If Omicron is reaching 100% prevalence in so many locations, I wonder if Delta will not be as much of a threat anymore? It seems like there haven't been any infections with older variants for a long time now.
Omicron evolved from Beta, which had pretty much bottomed out in the human population. They believe it evolved in mice. Just because Delta is disappearing in the human population doesn't mean it's gone.
Re:Omicron at 100% Prevalence, Colorado
by robocat on Thursday January 06, 2022 @05:34PM
(#29831443)
> They believe it evolved in mice.
https://pubmed.ncbi.nlm.nih.gov/34954396/
https://www.newshub.co.nz/home/world/2022/01/coronavirus-omi...
- to what extent does recovering from Omicron prevent Delta?
- how long does that immunity last?
We probably are going to have to live with this, but I'm not sure many countries have caught up to the healthcare staffing implications of that.