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Immunological regulation of Angiostrongylus cantonensis infections in rats: modulation of population density and enhanced parasite growth following one or two superimposed infections

  • W. K. Yong (a1) and Colin Dobson (a1)
Abstract

Rats acquired a degree of protective immunity to reinfection with Angiostrongylus cantonensis after a single infection with 50 infective larvae. Infected rats resisted the establishment of most challenging larvae and protective immunity increased with subsequent reinfections. Part of the primary infection was lost after a superimposed second and also following a superimposed third infection, but the total size of the concurrent adult worm populations remained the same as that from a primary infection. Worms surviving from the primary infection showed enhanced growth after each reinfection but their fecundity was impaired.

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Journal of Helminthology
  • ISSN: 0022-149X
  • EISSN: 1475-2697
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