CDC has updated its guidance for people who are fully vaccinated. See Recommendations for Fully Vaccinated People.
CDC recommends schools continue to use the current COVID-19 prevention strategies for the 2020-2021 school year. Learn more
Important update: Healthcare facilities
CDC has updated select ways to operate healthcare systems effectively in response to COVID-19 vaccination. Learn more
Getting vaccinated prevents severe illness, hospitalizations, and death. Unvaccinated people should get vaccinated and continue masking until they are fully vaccinated. With the Delta variant, this is more urgent than ever. CDC has updated guidance for fully vaccinated people based on new evidence on the Delta variant.
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.

Contact Tracing Resources for Health Departments

Contact Tracing Resources for Health Departments

Resources for Conducting Contact Tracing to Stop the Spread of COVID-19

Updated June 25, 2021

Resources from CDC

CDC guidance for COVID-19 may be adapted by state and local health departments to respond to rapidly changing local circumstances.

CDC guidance documents

CDC contact tracing implementation guides and tools

CDC communication resources

Find additional communication resources for health departments including toolkits, videos, print resources, and more.

CDC information on digital tools for COVID-19 contact tracing

Refer to the Interim Guidance on Developing a COVID-19 Case Investigation & Contact Tracing Plan for information about digital contact tracing tools.

Resources from federal and state organizations

Content describing non-CDC tools on this site is provided for informational purposes only and is not intended to indicate endorsement, actual or implied, of the tools. Additionally, information on this site is provided “as is,” for users to evaluate and make their own determination as to their effectiveness.

Guidelines and published journal articles

System of records notices

State and local governments

Private sector, non-governmental organizations and academia

Guidance and tools


Information on digital tools for COVID-19 contact tracing

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