In wealthier countries around the world, conversations and headlines are turning to the question of a COVID-19 vaccine booster: who needs one, when, and how soon people will get it?

The direct benefits of childhood vaccination in reducing the burden of disease morbidity and mortality in a cost-effective manner are well-established.

Delay travel until you are fully vaccinated. If you are not fully vaccinated and must travel, follow CDC’s recommendations for people who are not fully vaccinated.