ArticleActa parasitologica2019
Prevalence and Genetic Diversity of Toxoplasma gondii in Free-Ranging Chickens from the Caribbean.
Article in Acta parasitologica, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.
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Who cites it
11 citing papers in PubMed, 1 synthesis or guideline pooled it, 15 citations in OpenAlex.
- Prevalence of Toxoplasma gondii infection in chickens in China during 1993-2021: a systematic review and meta-analysis.Parasitology research · 2022Pooled it
- Pathology and parasite distribution in mice challenged withParasitology · 2026Article
- Detection of Toxoplasma gondii in Brain Tissues of Pet Birds with Neurological Symptoms Using Loop-Mediated Isothermal Amplification (LAMP) and PCR.Acta parasitologica · 2025Article
- Molecular prevalence and genetic diversity ofOpen veterinary journal · 2023Article
- Toxoplasma gondii clonal type III is the dominant genotype identified in Grenadian pigs.Veterinary medicine and science · 2022Article
- Molecular occurrence and risk factors for Toxoplasma gondii infection in equids in Jilin, China.Scientific reports · 2022Article
- Detection and genetic characterisation of Toxoplasma gondii circulating in free-range chickens, pigs and seropositive pregnant women in Benue state, Nigeria.PLoS neglected tropical diseases · 2021Article
- Early immune responses and parasite tissue distribution in mice experimentally infected with oocysts of either archetypal or non-archetypal genotypes ofParasitology · 2021Article
- Molecular Detection ofFrontiers in veterinary science · 2021Article
- Epidemiologic significance ofParasitology · 2020Review
- Phylogenetic Analysis and Genetics Polymorphisms Evaluation ofIranian journal of parasitologyArticle
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Authors and funding
9 authors at 6 institutions in 7 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeToxoplasma gondii is a zoonotic parasite capable of infecting a wide range of hosts. Free-range chickens are important sentinels in the epidemiology of this parasite as they feed from the ground and are likely to ingest oocysts shed in the faeces of infected cats. Atypical strains of T. gondii are known to dominate in South America where they are associated with more severe disease in humans, yet relatively little is known about the strains circulating in neighbouring Caribbean islands.
methodsIn this study, hearts and brains were collected from free-range chickens in Antigua and Barbuda (n = 45), Dominica (n = 76) and Trinidad (n = 41), and DNA was extracted for nested ITS1 PCR and PCR-RFLP. Sera were collected and screened for antibodies using the modified agglutination test (MAT).
resultsAntibodies to T. gondii were detected in 20.5, 38.2 and 17.1% of chickens in Antigua and Barbuda, Dominica and Trinidad, respectively. Toxoplasma gondii DNA was also detected by PCR in 24.4, 17.1 and 17.1% of chickens, respectively, giving an overall prevalence of 31.1, 42.1, and 29.3% for each of the 3 island nations. Results of PCR-RFLP revealed 2 new atypical genotypes (designated ToxoDB #281 and #282) and one Type III (ToxoDB #2) in chickens from Antigua. Partial genotyping of a further 8 isolates (7 from Antigua and one from Trinidad) revealed different allele-types at five or more markers for 7 of the isolates, suggesting atypical genotypes.
conclusionsThis is the first study to report the prevalence of T. gondii in free-range chickens in Antigua and Barbuda, Dominica and Trinidad and Tobago. It is also the first to report the presence of atypical genotypes in Antigua and Barbuda and Trinidad and Tobago.
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