Seroprevalence and risk factors of Trypanosoma evansi infection in horses in Peninsular Malaysia.

This research conducted a cross-sectional study on the prevalence and risk factors of Trypanosoma evansi infection among horses in Peninsular Malaysia, revealing a low prevalence and identifying higher risk in female and exogenous horses.

Research Objective and Methodology

• This study set out to determine the prevalence (‘seroprevalence’) and identify common risk factors of a parasitic infection called Trypanosoma evansi (T. evansi) among horses in Peninsular Malaysia. T. evansi is the causative agent for a disease known as ‘surra’ in horses.
• The researchers used a cross-sectional study design and collected a total of 527 blood samples from horses across eight states of Peninsular Malaysia.
• A structured questionnaire was also administered to collect data on potential risk factors associated with the prevalence of T. evansi infection.

Findings and Interpretations

• The analysis revealed that the overall seroprevalence of T. evansi was 13.90% (73 out of 527 samples), using the card agglutination test for T. evansi (CATT/T. evansi). This means that approximately 14% of the tested horses had been exposed to the parasite.
• The study found that female horses and horses from other regions (‘exogenous’ horses) had a higher associated risk of T. evansi seroprevalence compared to other groups.
• Interestingly, the study discovered that the majority of horse owners (85.30%) were not familiar with the disease ‘surra’. However, most owners were observed to be very concerned about the health of their horses.

Conclusion and Implications

• The conclusion of the study is that T. evansi occurs at a relatively low frequency among horses in Peninsular Malaysia.
• The researchers hypothesize that the observed low frequency might be due to the good management systems adopted by horse owners in the region, which are possibly effective at mitigating the spread of T. evansi.
• These findings underline the importance of good horse management practices and also point to the need for increased awareness among horse owners about surra and its risks.