Study Shows 4th Shot Of COVID Vaccine Doesn’t Prevent Omicron Infection

Posted January 17, 2022 by with 7 comments

Don’t worry, I’m sure a fifth shot will do the trick! Via Reuters:

A fourth shot of COVID-19 vaccine boosts antibodies to even higher levels than the third jab but it is not enough to prevent Omicron infections, according to a preliminary study in Israel.

Israel’s Sheba Medical Center has given second booster shots in a trial among its staff and is studying the effect of the Pfizer booster in 154 people after two weeks and the Moderna booster in 120 people after one week, said Gili Regev-Yochay, director of the Infectious Diseases Unit.

These were compared to a control group that did not receive the fourth shot. Those in the Moderna group had previously received three shots of Pfizer’s vaccine, the hospital said.

The vaccines led to a increase in the number of antibodies “even a little bit higher than what we had after the third dose”, said Regev-Yochay.

“Yet, this is probably not enough for the Omicron,” she told reporters. “We know by now that the level of antibodies needed to protect and not to got infected from Omicron is probably too high for the vaccine, even if it’s a good vaccine.”

I’ve been waiting to find out if it’s worth it to get a booster, and this kind of data obviously isn’t very convincing. (I still have a high level of antibodies after getting the two-dose Pfizer in June of last year.) At this point, it’s clear that the vaccines (whether you’ve had 2, 3, or even 4 jabs) are only really effective at preventing death and serious illness, not infections. If you don’t want to be infected, wear a high quality mask and stay out of public places.