Mullingar's Professor Kingston Mills says evidence shows this can provide additional protection against the Delta variant.
An immunologist is urging NIAC to recommend using either the Pfizer or Moderna vaccine as a second dose to people who received a first jab of AstraZeneca.
Mullingar's Professor Kingston Mills says evidence shows this can provide additional protection against the Delta variant of Covid-19.
It comes as the Chief Medical Officer is to consult with NIAC on the issue of using AstraZeneca and Johnson and Johnson vaccines for younger groups.
Professor Mills of Trinity College Dublin says using mRNA vaccines as a top up to AstraZeneca can boost immunity:
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