Detection and molecular characterization of Hepatozoon canis, Babesia vogeli, Ehrlichia canis, and Anaplasma platys in dogs from Metro Manila, Philippines
2017
Adao, D.E.V., University of the Philippines Diliman, Quezon City, Philippines | Herrera, C.M.T., University of the Philippines Diliman, Quezon City, Philippines | Galarion, L.H., University of the Philippines Diliman, Quezon City, Philippines | Bolo, N.R., University of the Philippines Diliman, Quezon City, Philippines | Carlos, R.S., Carlos Veterinary Clinic, Paranaque City, Philippines | Carlos, E.T., Makati Dog and Cat Hospital, Makati City, Philippines | Carlos, S.S., Makati Dog and Cat Hospital, Makati City, Philippines | Rivera, W.L., University of the Philippines Diliman, Quezon City, Philippines
The study of canine vector-borne diseases in the Philippines started in the 1970s but only gained interest in the past decade. Characterization of such diseases in the Philippines remains incomplete, thus, it is necessary to obtain additional information on the prevalence and diversity of canine tick-borne diseases in the country. In this study, blood samples were obtained at two veterinary clinics in Metro Manila, Philippines from 114 dogs suspected of having canine tick-borne pathogens. Polymerase chain reaction (PCR) was performed on whole blood DNA extracts followed by sequencing, and the following pathogens were detected: Hepatozoon (H.) canis (5.26%), Babesia (B.) vogeli (5.26%), Ehrlichia (E.) canis (4.39%), and Anaplasma platys (3.51%). Additionally, a set of multiplex PCR primers were developed to detect H. canis, Babesia spp. (B. canis and B. vogeli), and E. canis in canine blood. Multiplex and conventional single-reaction PCR results for the 114 dog blood samples were similar, except for one H. canis sample. Multiplex PCR is, therefore, a useful tool in screening infected dogs in veterinary clinics. This study’s results, together with those of previous studies in the country, show that canine vector-borne pathogens are an emerging veterinary concern in the Philippines.
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