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.
The persistence index is represented as in Figure 6. The first column corresponds to the reference scenario (Ref), in which none of the species is removed from the transmission process. The remaining columns correspond to the tested scenarios in which one after the other the indicated species is excluded from the transmission process. Abbreviations are as given in the legend to Figure 3.
