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Doctoral Thesis
DOI
10.11606/T.43.1990.tde-26092012-153154
Document
Author
Full name
Hyun Mo Yang
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 1990
Supervisor
Committee
Coutinho, Francisco Antonio Bezerra (President)
Helene, Otaviano Augusto Marcondes
Krieger, Henrique
Malta, Coraci Pereira
Massad, Eduardo
Title in Portuguese
Estudo matemático do mecanismo de regulação da esquistossomíase
Keywords in Portuguese
caramujo
controle
estabilidade
Macro-parasita
processos estocásticos
Abstract in Portuguese
Neste trabalho foram estudados dois mecanismos de regulação de esquistossomíase: a nível de hospedeiro intermediário (Modelo de May) e a nível de hospedeiro definitivo (Modelo de Imunidade Concomitante por período de incubação). Estudou-se como ambos os modelos comportam se quando da introdução de um modelo de regulação para a população do hospedeiro intermediário. Verificou-se que o modelo de regulação por imunidade concomitante é muito mais robusto, pois além de ajustar melhor a curva de prevalência fornece uma região de estabilidade para os parâmetros epidemiológicos muito maior.
Title in English
Mathematical study of the mechanism of regulation of schistosomiasis
Keywords in English
control
Macro-parasite
snail
stability
stochastic processes
Abstract in English
In this work two mechanisms for the regulation of the schistosomiasis were studied. In one model the regulation takes place at the intermediate host (May Model) and in the other model the regulation takes place at the definitive host (concomitant Immunity) . In both models the regulation of the intermediate host population was also included. It was found that regulation in the definitive host is much more robust than the regulation on the intermediate host allowing for a much greater range of the epidemiological parameters. Also the model of regulation on the definitive host allows for a very good fit of the prevalence curve.
 
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48105Yang.pdf (9.64 Mbytes)
Publishing Date
2012-09-26
 
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