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.
Capital of China CDC, manpower of China CDC, and service provided by China CDC.
Notes: Different shading of text tone in figure indicates model consists of several logically dedicated parts ie, subdiagrams. Each subdiagram containing a number of tightly interrelated variables. Lighter shading of text tone indicates variables used in several subdiagrams.
Abbreviation: China CDC, Chinese Centers for Disease Control and Prevention.
