On Monday, tourists fully vaccinated against COVID-19 from dozens of countries can travel to the United States. 

The Centers for Disease Control and Prevention laid out the rules. 

Tourists will need to have proof of vaccinations authorized by the Food and Drug Administration or for emergency use from the World Health Organization. 

Accepted forms of proof include verified cards, printouts of the cards or digital photos of the card or printouts, with identifying details such as name and date of birth. 

Vaccinated travelers still need to show a negative test within three days of travel.