Document Type


Publication Date

March 1980


Although malaria and hookworm disease appear to be on the decline, another dreaded parasitic disease-schistosomiasis-is on the increase. Presently, the number of infected individuals with schistosomes is estimated to be 250 million, and even though only a small proportion of them become sick and die, schistosomiasis remains a medical problem of great significance. The high incidence of infection of man with Schistosoma mansoni, Schistosoma japonicum or Schistosoma haematobium, as well as the chronic debilitating diseases produced, places these organisms among the world's most important infectious agents. This paper discusses the nature of immunity to schistosomiasis.

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