Abstract
Background:Tick-borne bacteria, Anaplasma platys and Ehrlichia canis are well recognized as the etiology of anemia and thrombocytopenia in dogs. The clinical signs of anaplasmosis and ehrlichiosis range from asymptomatic to severe symptoms . There are insufficient studies about epidemiological surveys of these blood parasites, also the association of infections with the hematological study.Aim:This study aimed to screen A. platys and E. canis in naturally infected dogs and the effects of the infection on the levels of packed cell volume (PCV) and platelet count.Materials and Methods:A total of 68 blood samples were collected from free-roaming dogs at Nong Kung Sri district, Kalasin Province, Thailand, and examined for A. platys and E. canis infection by polymerase chain reaction (PCR) and measured PCV levels and platelet count.Results:Using nested PCR, 42.65% of dogs were infected with one or two pathogens. The molecular detection of anaplasmosis and ehrlichiosis in this population was 29.4% (95% confidence interval [CI]: 18.98-41.71) and 25% (95% CI: 14.4-35.3), respectively. Coinfection occurred at 11.8% (95% CI: 5.22-21.87). Infection with E. canis and coinfection showed significant association with PCV levels (p<0.05) while A. platys infection showed no statistical relationship. Infection with A. platys, E. canis, and coinfection had a non-significant correlation with platelet count (p>0.05).Conclusion:This study provides data of anaplasmosis and ehrlichiosis in free-roaming dogs which indicated that these zoonotic diseases are widespread and require for disease frequency determination, especially in Kalasin Province of Thailand where data of tick-borne infections in dogs have not been reported.
Highlights
Canine ehrlichiosis and anaplasmosis are the infectious diseases caused by bacteria of the order Rickettsiales, family Anaplasmataceae, and genera Ehrlichia and Anaplasma that are transmitted by ixodid ticks [1]
Materials and Methods: A total of 68 blood samples were collected from free-roaming dogs at Nong Kung Sri district, Kalasin Province, Thailand, and examined for A. platys and E. canis infection by polymerase chain reaction (PCR) and measured packed cell volume (PCV) levels and platelet count
This study provides data of anaplasmosis and ehrlichiosis in free-roaming dogs which indicated that these zoonotic diseases are widespread and require for disease frequency determination, especially in Kalasin Province of Thailand where data of tick-borne infections in dogs have not been reported
Summary
Canine ehrlichiosis and anaplasmosis are the infectious diseases caused by bacteria of the order Rickettsiales, family Anaplasmataceae, and genera Ehrlichia (ehrlichiosis) and Anaplasma (anaplasmosis) that are transmitted by ixodid ticks [1]. In Thailand, Ehrlichia canis and Anaplasma platys infections are commonly diagnosed [2,3] which the principal vector of these parasites is the brown dog tick, Rhipicephalus sanguineus [4]. Dogs acquire infections through the bite of infected ticks These tick-borne diseases remain veterinary relevance in tropical and subtropical countries due to the spread of Copyright: Piratae, et al Open Access. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/ publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. Tick-borne bacteria, Anaplasma platys and Ehrlichia canis are well recognized as the etiology of anemia and thrombocytopenia in dogs. There are insufficient studies about epidemiological surveys of these blood parasites, the association of infections with the hematological study
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