Professor Matthew Snape said alternating jabs could trigger added protection against coronavirusCoronavirus vaccines made by Moderna and Novavax will be added to a 'mix and match' trial, scientists said today. Britain's medical regulator currently requires everyone to have two doses of the same jab — either AstraZeneca, Pfizer or Moderna. But Oxford University experts are testing whether alternating second doses could provoke a stronger immune response. In the wake of AstraZeneca's blood clot fears, France approved giving recipients an alternative second dose. In the trial they may be offered the Moderna or Novavax vaccines for their second dose.
