Moderna says mRNA flu vaccine sailed through trial, beating standard shot

An mRNA-based seasonal flu vaccine from Moderna was 27 percent more effective at preventing influenza infections than a standard flu shot, the company announced this week.

Moderna noted that the new shot, dubbed mRNA-1010, hit the highest efficacy target that it set for the trial, which included nearly 41,000 people aged 50 and above. Participants were randomly assigned to receive either mRNA-1010 or a standard shot and were then followed for about six months during a flu season.

Compared to the standard shot, the mRNA vaccine had an overall vaccine efficacy that was 26.6 percent higher, and 27.4 percent higher in participants who were aged 65 years or older. Previous trial data showed that mRNA-1010 generated higher immune responses in participants than both regular standard flu shots and high-dose flu shots.

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