Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
CDC core indicators and thresholds for risk of introduction and transmission of COVID-19.a
| Core indicators | Lowest risk | Lower risk | Moderate risk | Higher risk | Highest risk |
|---|---|---|---|---|---|
| Number of new cases per 100,000 persons within the last 14 days | <5 | 5 to <20 | 20 to <50 | 50 to ≤200 | >200 |
| Percentage of RT-PCR tests that are positive during the last 14 days | <3% | 3 to <5% | 5 to <8% | 8 to ≤10% | >10% |
Note that this table was originally developed by the CDC to apply to school settings.
