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.
Coevolutionary stable strategies plotted against (a, b) recovery rate 
and (c, d) susceptibility to infection β. Blue lines show the host's immune activation rate μ. (a, c) Plastic pathogen: amber and red lines show the pathogen's respective virulence levels 
and 
; dashed lines show the lower CoESS, with μ = 0 (see Fig. 5a). (b, d) Nonplastic pathogen: amber lines show the pathogen's virulence level α.
