Antibodies reactive with Bartonella henselae and Ehrlichia canis in dogs from the communal lands of Zimbabwe

Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11 222, Palmerston North, New Zealand. p.kelly
Journal of the South African Veterinary Association (Impact Factor: 0.35). 09/2004; 75(3):116-20. DOI: 10.4102/jsava.v75i3.465
Source: PubMed


The prevalences of antibodies against Bartonella henselae and Ehrlichia canis were determined in sera from 228 dogs in 5 communal lands of Zimbabwe, areas where traditional subsistence agro-pastoralism is practised. The sera were collected from apparently healthy dogs during routine rabies vaccination programmes and tested with indirect fluorescent antibody assays using B. henselae (Houston-I) and E. canis (Oklahoma) as antigens. We found reactive antibodies (> or =1:80) against B. henselae in 14% of the dogs tested. Seropositive animals were found in Bikita (41%; 17/42), Omay (13%; 6/48), Chinamora (5%; 2/38) and Matusadona (15%; 7/48). No seropositive dogs were found in Chiredzi (0%; 0/52). Antibodies reactive with E. canis (> or =1:80) were found in 34% of the dogs tested, from Bikita (88%; 37/42), Chiredzi (31%; 16/52), Omay (17%; 8/48), Chinamora (26%; 10/38) and Matusadona (15%; 7/48). Our survey shows dogs in the communal lands of Zimbabwe are frequently exposed to E. canis and B. henselae or closely related species. Further studies are indicated to determine the pathogenicity of the organisms infecting these dogs and their clinical significance.

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    • "Serologic and molecular studies detected evidence of E. canis among African dogs throughout the continent, including Sudan (Inokuma et al., 2006b), Zimbabwe (Kelly et al., 2004; Matthewman et al., 1993), Cameroon (Ndip et al., 2005), Ivory Coast and Gabon (Davoust et al., 2006), and Tunisia, Senegal and Chad (Brouqui et al., 1991). Positive test rates in these studies ranged from 32% (Ndip et al., 2005) to 80.8% (Inokuma et al., 2006b). "
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    Veterinary Parasitology 10/2008; 158(4):256-73. DOI:10.1016/j.vetpar.2008.09.013 · 2.46 Impact Factor
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    • "Seroprevalence studies have suggested the presence of E. canis or related Ehrlichia spp. infecting dogs throughout Africa (Pretorius and Kelly, 1998; Brouqui et al., 1991; Botros et al., 1995; Kelly et al., 2004). Notably, higher antibody titers to E. chaffeensis than to E. canis were reported in 7 dogs from South Africa, suggesting that E. chaffeensis was the etiologic agent in those cases (Pretorius and Kelly, 1998). "
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    ABSTRACT: Sera from 173 apparently healthy, unvaccinated dogs from 4 widely separated communal lands in Zimbabwe were tested by ELISA for antibodies against canine distemper virus. Overall, 82% were positive with high prevalences found in each communal land. The highest seroprevalence was in dogs between 1 and 2 years of age (91%; 49/54). These results show dogs in the communal lands of Zimbabwe are commonly exposed to canine distemper virus and that a substantial number survive infection. The role that the virus might play in the high mortality rate of the dog population on communal land warrants further investigation.
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