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.
Spearman’s rank correlation coefficient between the number of years with human WNND cases (0–5) and the number of human cases for each year.
| Year | 2015 | 2016 | 2017 | 2018 | 2019 |
|---|---|---|---|---|---|
| Spearman’s rank correlation coefficient | 0.2972029 | 0.4517637 | 0.3884571 | 0.7636387 | 0.3927736 |
