: Allowing people to mix COVID-19 vaccines could cut into Pfizer and Moderna’s revenue next year

: Allowing people to mix COVID-19 vaccines could cut into Pfizer and Moderna’s revenue next year
Expect to see data this month from several clinical trials that are trying to establish if “mixing and matching” different COVID-19 vaccines is safe and effective or if it’s better to get the same booster as the one used in the primary series of shots.

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