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.
Exposure-response curves of maximum temperature (°C) and relative humidity (%) and their RR at lag 3 for PR (subtropical climate). a) and b) for COVID-19 cases and c) and d) for Influenza hospitalizations. Vertical lines mean the 25th, 75th, and 99th percentiles.
