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Molecular survey and characterization of Trypanosoma evansi in naturally infected camels with suspicion of a Trypanozoon infection in horses by molecular detection in Egypt.

Abstract：

:In Egypt, although the Trypanosoma evansi has been reported frequently among domestic animals, there is no published data on T. evansi in horses. Therefore, this study aimed to assess the prevalence and characterization of T. evansi in three governorates by examining blood samples from 40 local camels, 35 imported camels, 25 horses and 10 donkeys by PCR targeting the sequences of TBR and RoTat 1.2VSG. The overall prevalence of T. evansi was 54.5% and 21.8% by TBR PCR and RoTat 1.2VSG PCR, respectively. The TBR PCR detected T. evansi in 60% and 71.4%, respectively, of local and imported camels and in 10% and 40% of donkeys and horses, respectively. For RoTat 1.2VSG PCR, T. evansi was detected in 32.5% and 31.4 of local and imported camels, respectively. All horses and donkeys were negative by RoTat 1.2VSG PCR. TBR PCR was superior to RoTat 1.2VSG PCR in T. evansi infection detection. Statistically significant differences in the prevalence of the infection were observed on the basis of body condition and location. Sequencing and phylogenetic analysis, based on RoTat 1.2VSG, confirmed the presence of T. evansi, which was closely related to Egyptian and Indian isolates. In conclusion, TBR PCR is the best assay to monitor T. evansi infections in camels, horses, and donkeys. The presence of T. evansi in horses and donkeys possibly play a role in the transport of the infection to camels. This is the first report of T. evansi infection in horses in Egypt using TBR PCR.

journal_name

Microb Pathog

journal_title

Microbial pathogenesis

authors

Elhaig MM,Sallam NH

doi

10.1016/j.micpath.2018.07.017

subject

Has Abstract

pub_date

2018-10-01 00:00:00

pages

201-205

eissn

0882-4010

issn

1096-1208

pii

S0882-4010(18)30707-1

journal_volume

123

pub_type

杂志文章

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