Important update: Healthcare facilities
CDC has updated select ways to operate healthcare systems effectively in response to COVID-19 vaccination.
Learn more
Find the latest information:
Recommendations for Fully Vaccinated People
COVID-19 Homepage
Recommendations for Fully Vaccinated People
COVID-19 Homepage
UPDATE
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.
UPDATE
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.
UPDATE
Travel requirements to enter the United States are changing, starting November 8, 2021. More information is available here.
Science and Research
Science and Research
COVID-19 by County
COVID-19 hospital admission levels are a tool to help you and communities decide what prevention steps to take based on the latest information.
CDC's Science Agenda for COVID-19
Learn more about the high-level framework for planning and prioritization of COVID-19 work.
Science Updates
Brief summaries of new COVID-19 studies on many topics
Data and Surveillance
Weekly Data Tracker summaries, forecasting, and monitoring of cases and variants
Science Briefs
Science briefs on new and emerging topics
Recent CDC Articles
- Correlations and Timeliness of COVID-19 Surveillance Data Sources and Indicators ― United States, October 1, 2020–March 22, 2023
- COVID-19 Surveillance After Expiration of the Public Health Emergency Declaration ― United States, May 11, 2023
- Effectiveness of Monovalent mRNA COVID-19 Vaccination in Preventing COVID-19–Associated Invasive Mechanical Ventilation and Death Among Immunocompetent Adults During the Omicron Variant Period — IVY Network, 19 U.S. States, February 1, 2022–January 31, 2023
- Use of COVIDTests.gov At-Home Test Kits Among Adults in a National Household Probability Sample — United States, 2022
- The Association of Reported Experiences of Racial and Ethnic Discrimination in Health Care with COVID-19 Vaccination Status and Intent — United States, April 22, 2021–November 26, 2022
- Stroke Mortality Among Black and White Adults Aged ≥35 Years Before and During the COVID-19 Pandemic — United States, 2015–2021
- Suspected Suicide Attempts by Self-Poisoning Among Persons Aged 10–19 Years During the COVID-19 Pandemic — United States, 2020–2022
Journals and Studies
Archived Content
To find a list of content that has been archived for historical purposes, please visit our archive. Please note the content of these pages and files may be out of date as they are no longer being updated. View Archive.