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.
Epidemiological distribution of PCM cases throughout the world. The Netherlands, Germany, Austria, and Japan have imported cases. Legends show the name of the country and the number of cases identified through the period mentioned in each study.
