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Table 4 The equilibrium worm burden, M for Model 1 at time t = 50 years for different vaccination levels, with the vaccine efficacy parameters set as: v 1 = 0, v 2 = 0, v 3 = 0.80 and the transmission intensity constant: R 0 = 2.5

From: Developing a mathematical model for the evaluation of the potential impact of a partially efficacious vaccine on the transmission dynamics of Schistosoma mansoni in human communities

Vaccination coverage, p (%) Equilibrium worm burden (M )
50 7.40 × 10-4
75 9.66 × 10-5
90 7.80 × 10-6
  1. The duration of vaccine protection is assumed to be lifelong, ω = 0. In the absence of vaccination, the endemic mean worm burden is M 0 = 100 worms per host