| CDC | Centers for Disease Control and Prevention; |
| CI | confidence interval; |
| SD | standard deviation; |
| SVI | social vulnerability index. |
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.