Moderna said on Monday its experimental influenza vaccine was found to be 26.6% more effective than a currently approved annual flu shot when tested in adults aged 50 years and older in a late-stage study.

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.

The biotechnology company’s messenger RNA flu vaccine candidate showed positive results in a late-stage trial.