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.
The standard use of protective masks (MNS = surgical masks, FFP2 (filtering facepiece) masks, FFP3 masks) prior to the COVID-19 pandemic, during the first peak of infections, and missing protective masks at the first peak of the COVID-19 pandemic.
