A case of transplacental transmission of Theileria equi in a foal in Trinidad |
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Authors: | Georges Karla C Ezeokoli Chuckwudozi D Sparagano Olivier Pargass Indira Campbell Mervyn D'Abadie Roger Yabsley Michael J |
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Affiliation: | School of Veterinary Medicine, Faculty of Medical Sciences, The University of the West Indies, St. Augustine Campus, EWMSC, Mt. Hope, Trinidad and Tobago. karla.georges@sta.uwi.edu |
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Abstract: | Equine piroplasmosis due to Theileria equi and Babesia caballi is endemic in Trinidad. A case of equine piroplasmosis due to T. equi was diagnosed in a thoroughbred foal at 10h post-partum. A high parasitaemia (63%) of piroplasms was observed in a Wright-Giemsa(?) stained thin blood smear from the foal. In addition, the 18S rRNA gene for Babesia/Theileria was amplified from DNA extracted from the blood of the foal and the mare. Amplified products were subjected to a reverse line blot hybridization assay (RLB), which confirmed the presence of T. equi DNA in the foal. The mare was negative by RLB but was positive for T. equi using a nested PCR and sequence analysis. In areas where equine piroplasmosis is endemic, severe jaundice in a post-partum foal may be easily misdiagnosed as neonatal isoerythrolysis. Foals with post-partum jaundice should be screened for equine piroplasmosis, which may be confirmed using molecular methods if available. |
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