Daily Mail

Covid booster jabs ARE likely to protect against Omicron: Third dose of Pfizer and Moderna 'massively' boosts the body's defences against virus by tripling T-cell levels, major study claims.

Clinical trial results support the UK's decision to use Pfizer or Moderna Covid vaccines as boosters
Six different manufacturer's vaccines proved to be safe and effective as boosters, scientists said
They were jabs made by AstraZeneca, Pfizer, Moderna, Novavax, Janssen and CureVac.