Immunization of cats against shedding of Toxoplasma oocysts.

  title={Immunization of cats against shedding of Toxoplasma oocysts.},
  author={Jacob Karl Frenkel and Dustin D Smith},
  journal={The Journal of parasitology},
  volume={68 5},
Development of immunity to the shedding of oocysts was examined in 75 kittens that survived infection with the three stages of Toxoplasma gondii. Of 16 kittens fed bradyzoites in cysts, 94% were immune and did not shed oocysts. Of seven injected with tachyzoites 86% were immune. Of 18 fed sporozoites only 11% were immune, but following injection, 54% of 12 were immune. After the administration of either bradyzoites or tachyzoites from nonoocyst-producing strains, only 9% of 22 were immune… CONTINUE READING

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