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Attempted transmission of Ehrlichia risticii by field-captured Dermacentor variabilis (Acari: Ixodidae)



Attempted transmission of Ehrlichia risticii by field-captured Dermacentor variabilis (Acari: Ixodidae)



American Journal of Veterinary Research 47(11): 2393-2395



The capability of field-collected American dog ticks, D. variabilis, to infect horses with E. risticii, the causative agent of Potomac horse fever (PHF), was examined by allowing adult ticks collected from horse farms with a history of PHF to feed on susceptible horses. More than 500 male and female ticks attached and fed on 3 test horses; however, no clinical or serological evidence of PHF was observed in treated or control horses.

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Accession: 001533660

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PMID: 3789501



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