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

Contact Tracing

Contact tracing slows the spread of COVID-19

Updated June 21, 2021
contact tracing slows the spread of covid-19
toolbox solid icon
Contact Tracing Communications Toolkit

State and local health department staff can use or adapt these ready-made materials to educate their community about case investigation and contact tracing for COVID-19.

View the toolkit
question circle solid icon
Contact Tracing: Frequently Asked Questions

CDC’s answers to commonly asked questions about COVID-19.

View the FAQs
Contact Tracing Training

Trainings for public health professionals interested in becoming a COVID-19 contact tracer or case investigator, as well as for public health professionals who already serve in these roles and are seeking to improve their knowledge.

Social media graphics
Split image: half shows a contact tracer at a computer with a headset. Other half shows a cell phone with a message
Answer the Call from the Health Department
a woman on a phone
Tell Your Close Contacts
illustration of a woman on a phone
Tell Your Close Contacts
illustration of a contact-tracer on the phone with someone
Call Your Health Department to Report Symptoms of COVID-19
a man on the phone with a contact-tracer
Contact Tracing Slows the Spread of COVID-19
illustration of multiple people with lines indicating their connections to each other
Multi-Use Contact Tracing Images

Visit COVID-19 Contact Tracing Communications Graphics for more graphics.