Fig 4. Ring map of hospitalization rate of scarlet fever in age group 3–4 years.
(A) A Z score ring map from innermost in 2009 to outermost in 2017. (B) A ring map of Z-scores by applying spatio-temporal Gi* without time lag.
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.