FDA OKs Mixing COVID Vaccines; Backs Moderna, J&J Boosters

The FDA has approved COVID-19 booster shots for Moderna and Johnson & Johnson vaccines, allowing for mix and match options. This emergency approval aims to increase accessibility and speed up vaccinations. The CDC will provide further guidance soon. The Moderna booster is half the initial dose, and the mix and match strategy is designed to ease the process for those who may have had adverse reactions to their initial vaccine brand.

How does emergency approval differ from full authorization for vaccines?

What considerations might influence a person's choice to mix and match vaccines?