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.
Percentage of respiratory specimens testing positive for influenza virus*, by epidemiologic week—National Influenza Centre, Chile, 2017–19 and 2021–22†. *Data lines represent right-aligned, 3-week moving averages of percentage of specimens testing positive for influenza virus. †2022 data as of epidemiologic week 36.
