These Are The Two Most Effective Covid Boosters, According To Scientists

The Pfizer and Moderna vaccines are the most effective Covid booster jabs. a new study has found, but all boosters could help fight the Omicron variant.

Newly published research from the ongoing CovBoost study into vaccines, shows that six different vaccines are safe and effective as booster doses for people who have already had two doses of AstraZeneca or Pfizer/BioNTech.

The latest CovBoost trial, published in the Lancet, involved 2,878 people aged 30 or over who received a booster 10 to 12 weeks after their initial two jabs.

The six vaccines tested as a third doses were AstraZeneca, Pfizer/BioNTech, Moderna, Novavax, Janssen (made by Johnson and Johnson) and CureVac (which has ceased production).

“All of the vaccines in our study do show a statistically significant boost,” says Professor Saul Faust, trial lead and director of the NIHR Clinical Research Facility at University Hospital Southampton NHS Foundation Trust.

He stressed that while the boost delivered by the two mRNA vaccines – Pfizer and Moderna – was “very high”, Novavax, Janssen and AstraZeneca also delivered “very effective boosts”.

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