June Raine Britain Covid-19 vaccine strain June Raine Britain

Bivalent booster vaccine: How the new Covid jab's side effects compare to previous doses

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msn.com

COVID-19 jab, known as the Spikevax bivalent Original/Omicron vaccine, to be given as a booster. Half of the Moderna-made vaccine (25 micrograms) targets the original virus strain from 2020 and the other half (25 micrograms) targets the Omicron variant.

The Medicines and Healthcare products Regulatory Agency (MHRA) said it was found to "meet the UK regulator's standards of safety, quality and effectiveness".

This decision comes as data from a clinical trial showed how a booster with the bivalent Moderna vaccine triggers a "strong immune response" against both Omicron (BA.

1) and the first 2020 strain. The bivalent vaccine was also found to create a "good immune response" against the Omicron sub-variants BA.

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