Table 1.
Main differences between the models
| Previous | Current | |
|---|---|---|
| Number of equations | 19 | 10 |
| Number of parameters | 54 | 27 |
| Number of compartments | 2 | 1 |
| Number of populations considered | 10 | 8 |
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.