ArticleParasitology research2022
Abortion outbreak in a sheep flock caused by Toxoplasma gondii clonal type III.
Article in Parasitology research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed, 7 citations in OpenAlex.
- Dense granule proteins: key mediators ofFrontiers in medicine · 2026Review
- A review of natural products as a source of next-generation drugs against apicomplexan parasites.npj antimicrobials and resistance · 2025Review
- Description of a sheep abortion caused by atypical genotype of Toxoplasma gondii in the state of Mato Grosso, Brazil.Veterinary research communications · 2025Article
- Fatal toxoplasmosis in Coendou spinosus from Southern Brazil: clinical, pathological, and genotype findings.Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria · 2025Article
- Investigation of Toxoplasma gondii Infection in Yunnan Semi-fine Wool Sheep (Ovis aries) and wild Rodents in Yunnan, China.Acta parasitologica · 2024Article
- Sheep abortions associated with Neospora caninum and Toxoplasma gondii infections in multiple flocks from Southern Brazil.Veterinary research communications · 2024Article
- Seroprevalence of Specific Antibodies toAnimals : an open access journal from MDPI · 2022Article
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Authors and funding
9 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Toxoplasma gondii is a major cause of reproductive losses in small ruminants in several countries. We describe here an outbreak of T. gondii-associated abortion in sheep in Southern Brazil. The flock was comprised of 55 adult sheep, and late-term abortions and stillbirths were detected in 15/36 (41.66%) gestating ewes. Serum samples collected from 45 sheep were tested for T. gondii through indirect immunofluorescence assay; IgM and IgG positive results were detected in 44.44% (20/45) and 86.67% (39/45) of the cases, respectively. Four fetuses and two placentas were pathologically evaluated. Gross changes were restricted to fetal membranes and were characterized by multifocal white areas in the cotyledons. Microscopically, these areas corresponded to necrotic foci affecting the chorionic epithelium accompanied by rare cysts of T. gondii. The main histological change in fetal tissues consisted of well-demarked and sparsely distributed necrotic foci in the central nervous system. Tissue samples from all four fetuses and one placenta had positive PCR results for T. gondii. Restriction fragment length polymorphism (RFLP) genotyping using ten markers (SAG1, 5'-3'SAG2, alt.SAG2, SGA3, BTUB, GRA6, c22-8, c29-2, L358, and PK1) was carried out on one sample, and results were consistent with T. gondii clonal type III (ToxoDB-PCR-RFLP genotype #2, TgCpBr4).
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