Fig. 3.
Figure explaining Intensity Duration. Intensity Duration’s length (ID) indicates the number of weeks where the number of new infected case counts are more than a specific threshold
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.