Bivalent boosters handle two viral strains in the identical vaccine. The up to date booster incorporates Moderna’s authentic vaccine, and a vaccine candidate that targets the Omicron variant.
The vaccine was usually well-tolerated, the corporate mentioned, with unwanted side effects much like booster doses of the present vaccine.
The 50-microgram bivalent booster, known as mRNA-1273.214, generated a stronger antibody response in opposition to Omicron than the unique Moderna vaccine. Omicron subvariants are driving nearly all the brand new Covid-19 instances in the US proper now.
In April, Moderna introduced its first bivalent Covid-19 booster shot candidate — which mixed components of the present vaccine with updates primarily based on the Beta variant — induced larger antibody responses in opposition to all variants of concern, together with Omicron, when in comparison with the corporate’s authentic Covid-19 booster shot.