Corona booster shot from Pfizer is much less effective against serious omikron infection after three months

The protection that a so-called booster shot with the Pfizer-BioNTech vaccine offers against the omikron variant has already decreased sharply after three months. This is apparent from an analysis that the vaccine manufacturer had itself carried out, and which was published in the scientific journal The Lancet. “In the future, additional doses of existing, modified or new COVID-19 vaccines may be needed to continue to provide high protection against severe contamination,” it said.