Journal
VETERINARY PARASITOLOGY
Volume 179, Issue 4, Pages 343-350Publisher
ELSEVIER
DOI: 10.1016/j.vetpar.2011.03.047
Keywords
Babesia canis canis; CERTIFECT (TM); Dermacentor reticulatus; Dogs; Transmission blocking
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Funding
- Merial Limited, GA, USA
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Four groups of seven dogs were treated topically with a novel combination of fipronil, amitraz and (S)-methoprene in a spot-on formulation (CERTIFECT (TM), Merial Limited, GA, USA) on 28, 21, 14 and 7 days prior to tick infestation, respectively and acaricidal efficacy and transmission blocking compared with an untreated control group (seven dogs). All dogs were infested with adult Dermacentor reticulatus ticks harbouring Babesia canis canis. Babesia canis canis was transmitted by D. reticulatus to all seven untreated control clogs, confirmed following demonstration of clinical signs, by the detection of B. canis parasites in thin blood smears and B. canis canis PCR-RLB DNA assay on blood and the development of B. canis canis antibody titres by 14-21 days after tick infestation. The majority of treated dogs remained sero-negative for 42 days after infestation. Therefore, the treatment of dogs with CERTIFECT (TM) applied up to 28 days prior to infestation with D. reticulatus harbouring B. canis canis. successfully prevented the development of clinical signs of canine babesiosis. (C) 2011 Elsevier B.V. All rights reserved.
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