Acquired immunity of a schistosomiasis transmission model--analysis of the stabilizing effects.
A semi-stochastic model for schistosomiasis was developed based on the immune response built up by human host after elapsing a fixed period of time L from the first infection, and on the parasite infection with multiple occurrences. Both acquired immunity and multiple parasite infections reproduced a great endemic stability for the disease and a high value for the basic reproduction ratio.
IMECC-Depart. Mat. Aplicada, Universidade Estadual de Campinas, Caixa Postal 6065, Campinas, CEP 13081-970, SP Brazil. hyunyang@ime.unicamp.br
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D000818:Animals; D006801:Humans; D018448:Models, Immunological; D012008:Recurrence; D012098:Reproduction; D012547:Schistosoma / Q000502:physiology; D012552:Schistosomiasis / Q000276:immunology* / Q000635:transmission*; D013997:Time Factors