Research Article

The Impact of Coinfections and Their Simultaneous Transmission on Antigenic Diversity and Epidemic Cycling of Infectious Diseases

Figure 5

Impact of the basic reproductive number and immunity period on the critical value of the efficiency of partial transmission from coinfections for the cyclic epidemics and their periods. Five immunity periods are illustrated: 1, 3, 10, 20, and 50 years in panels (a) and (b). Panel (a) shows the dynamical maps with CCE representing chaotic/cyclical epidemics and panel (b) shows the interepidemic period when . In panel (c) the interepidemic periods in years are shown against and . Other parameter values are years, years, day−1, day−1, day−1, day−1, , and . The basic reproductive number of single infection ( ) varies by altering the infectious period (1/ ).
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(a)
375862.fig.005b
(b)
375862.fig.005c
(c)