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.
A. Lockdown policy; B. Travel restriction policy; C. Total policy which is the sum of lockdown and travel restriction policies (the mean and 95% confidence interval).
