Epidemiology of Q fever in ruminants in the north-east and the north region of Thailand, 2012 to 2013
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Abstract
Objective: To investigate the Q fever status in ruminants especially in the North-East and the North regions of Thailand.
Material and methods: From 2012 to 2013, 1044 placentas were collected from cows, buffaloes, goats, sheep, and wildlife ruminants from both regions by convenience sampling. Macroscopic examination was initially done, and followed by the extraction of DNA from the placentas. DNA of the placenta samples were identified for Coxiella burnetii by the real-time PCR technique targeting the IS1111 gene.
Results: All samples had no gross lesions. In total samples 76.63% (800/1044) were PCR positive with in the North-East 76.19% (685/899), and the North 79.31% (115/145).
Conclusion: This study indicated that the placentas, collected from ruminants in the North-East and the North, had positive results of C. burnetii by real-time PCR, with none of abortions. The high percentage of positive results might because of contamination from the bedding, manure, and environment. Further studies, the immunohistochemistry technique should be performed to definitively identify infected placentas.
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References
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