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Table 3 The equilibrium worm burden, M for different R 0 values with the vaccine efficacy set as: v 1 = 0, v 2 = 0, v 3 = 0.80 and the vaccination coverage as p = 70% and p = 80%

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

Transmission intensity (R 0) Equilibrium mean worm burden (M ), p = 0.70 Equilibrium mean worm burden (M ), p = 0.85
1.5 3.51 × 10-4 3.41 × 10-4
2.5 9.71 × 10-4 8.76 × 10-4
3.5 3.33 × 10-3 2.47 × 10-3
  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