'Significant increase' in protection vs Omicron from mRNA boosters, study says

Vials labelled "Vaccine Coronavirus Covid-19" and a syringe are seen in front of displayed words "Omricon Sars-Cov-2" in this illustration taken on Dec 11, 2021.COPENHAGEN - Getting a third dose of either Pfizer-BioNTech's or Moderna's Covid-19 vaccine offers a "significant increase" in protection against the Omicron variant in elderly people, according to a Danish study published on Wednesday .

"Our study contributes to emerging evidence that BNT162b2 or mRNA-1273 primary vaccine protection against Omicron decreases quickly over time, with booster vaccination offering a significant increase in protection," the authors wrote in the study. Among those who recently had their second vaccine dose, effectiveness against Omicron was measured at 55.2 per cent for Pfizer-BioNTech and 36.7 per cent for Moderna, compared to unvaccinated people.[[nid:559805]]

However, a third dose of Pfizer-BioNTech's vaccine restored protection to 54.6 per cent in people aged 60 or more who had been inoculated 14 to 44 days earlier, compared to those with only two doses.

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'Significant increase' in protection vs Omicron from mRNA boosters, study saysThe study, which is not yet peer-reviewed, investigated the effectiveness of COVID-19 vaccines that use so-called mRNA technology against the Delta variant and the new, more infectious Omicron variant. 'Our study contributes to emerging evidence that BNT162b2 (Pfizer-BioNTech) or mRNA-1273 (Moderna) primary vaccine protection against Omicron decreases quickly over time, with booster vaccination offering a significant increase in protection,' the authors wrote in the study.
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