'3 shots Pfizer COVID vax 4x less effective against Omicron than Delta'

The neutralizing ability of even three shots of the Pfizer corona vaccine is four times less against the Omicron than the Delta variant, according to researchers at Sheba Medical Center. The team looked at the ability of serums of 40 vaccinated healthcare workers at Sheba to neutralize the Omicron variant – 20 who received the booster shot within the last month, and 20 who had only received two shots, the last one five or six months ago.-- More...