Important update: Healthcare facilities
CDC has updated select ways to operate healthcare systems effectively in response to COVID-19 vaccination. Learn more
Given new evidence on the B.1.617.2 (Delta) variant, CDC has updated the guidance for fully vaccinated people. CDC recommends universal indoor masking for all teachers, staff, students, and visitors to K-12 schools, regardless of vaccination status. Children should return to full-time in-person learning in the fall with layered prevention strategies in place.
The White House announced that vaccines will be required for international travelers coming into the United States, with an effective date of November 8, 2021. For purposes of entry into the United States, vaccines accepted will include FDA approved or authorized and WHO Emergency Use Listing vaccines. More information is available here.
Travel requirements to enter the United States are changing, starting November 8, 2021. More information is available here.

There are Different COVID-19 Vaccines

There are Different COVID-19 Vaccines
Updated May 28, 2021

Some COVID-19 vaccines need 1 dose.

Some COVID-19 vaccines need 2 doses.

Some COVID-19 vaccines are for people ages 12 and older.

Some COVID-19 vaccines are for people ages 18 and older.


All COVID-19 vaccines teach your body to fight COVID-19.

All COVID-19 vaccines need 14 days to teach your body.

Stay safe between COVID-19 vaccine doses.

Stay safe while you wait 14 days after your last dose.


Ask about the COVID-19 vaccine you get.

Ask how many doses you need.

Ask when you will get your doses.

Ask when you will be protected from COVID-19.


Original Guidance: Key Things to Know About COVID-19 Vaccines 

Development of these materials was supported by a grant from the CDC Foundation, using funding provided by its donors. The materials were created by the Center for Literacy & Disability Studies, Department of Allied Health Sciences, University of North Carolina at Chapel Hill and the Center for Inclusive Design and Innovation at Georgia Tech. Centers for Disease Control and Prevention (CDC) provided subject matter expertise and approved the content. The use of the names of private entities, products, or enterprises is for identification purposes only and does not imply CDC endorsement.

Project funding ended 9/30/2021. All edits after that date are completed solely by CDC.