A combination vaccine for flu and COVID-19 is in the works. Here’s what to know.

As the holiday season draws near, more Americans may be sporting two Band-Aids after receiving both their flu shot and the new COVID-19 bivalent booster.

Vaccine developers are looking to relieve people from the unpleasantness of getting two shots by creating one that offers strong protection against both viruses.

Moderna and Pfizer-BioNTech, companies that have led the COVID-19 vaccination strategy, say they’re beginning trials to assess the safety, efficacy and dosage of their candidate vaccine that combines four flu strains and two coronavirus strains.

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