Important update: Healthcare facilities
CDC has updated select ways to operate healthcare systems effectively in response to COVID-19 vaccination. Learn more
To maximize protection from the Delta variant and prevent possibly spreading it to others, get vaccinated as soon as you can and wear a mask indoors in public if you are in an area of substantial or high transmission.
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.

Data & Surveillance

Data & Surveillance

COVID Data Tracker

Find maps and charts tracking cases, deaths, and trends of COVID-19 in the United States

Hospitalizations

Serology (Antibody) Surveillance

CDC is using information from COVID-19 seroprevalence surveys to learn more about past SARS-CoV-2 infections.