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  • Title: Prevention of Toxoplasma gondii abortion in goats by vaccination with oocysts of Hammondia hammondi.
    Author: Munday BL, Dubey JP.
    Journal: Aust Vet J; 1988 May; 65(5):150-3. PubMed ID: 3135793.
    Abstract:
    Nineteen does (female goats) were dosed with 500,000 oocytes of Hammondia hammondi prior to breeding. At about 90 days of gestation these, and 18 uninoculated does were challenged with 25,000 Toxoplasma gondii oocysts. The 19 H. hammondi--inoculated does produced 26 live and one dead kid (newborn goat). The 18 does not given H. hammondi produced 12 live and 19 dead kids. However, examination of all of the kids by isolation of T. gondii in mice, serology and histology revealed that they were all infected with T. gondii. Thus, while H. hammondi "vaccination" is protective against the deleterious effects of T. gondii on pregnant does, perhaps by reducing the severity of placental lesions, it does not prevent foetal infection.
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