Taiwan News: Of the 25 who received two doses of BNT, only five developed a neutralizing ability against the two Omicron variants, and vaccine efficiency dropped to 20-24%. As for the 25 inoculated with two doses of CoronaVac, none produced a detectable antibody against Omicron.

The study's authors concluded the Omicron variant is able to greatly reduce the efficacy of two doses of major COVID-19 vaccines. They suggested that recipients of these vaccines are at great risk of a breakthrough infection and those previously infected with COVID could be reinfected.

The drug advocates are still saying it reduces deaths, but afaik there's only been one death from Omicron in the world - and zero in SA where vaccine uptake is very low.

So it appears fresh-air offers equally strong protection against Omicron.

Not to say Omicron can't mutate into a more lethal version - it's possible - but vaccines that work for five minutes - or not at all - are not going to protect us against that.