Abstract
A randomized and controlled field study was performed in canine patients to evaluate the efficacy of selamectin in the treatment of naturally occurring Sarcoptes scabiei and Otodectes cynotis infestations in dogs. A total of 227 dogs from six veterinary practices in South Korea were included. Dogs were randomly assigned to treatment with selamectin or a positive‐control product. Selamectin was administered as a unit dose providing a minimum of 6 mg/kg in a topical preparation applied to the skin in a single spot on days 0 and 30 [S. scabiei (n = 113) and O. cynotis (n = 114)]. The presence of parasites was assessed before treatment and at 14, 30 and 60 days after the initiation of treatment. The animals were evaluated clinically at each assessment period. Based on skin scrapings, the efficacy of selamectin against S. scabiei infestations on dogs was >95% by day 30, and 100% by day 60. Against O. cynotis, selamectin eliminated mites in 100% of dogs by day 60. However, clinical signs of pruritus, erythema, scale, and crusted papules did not diminish concomittantly with resolution of S. scabiei in skin scrapings. The positive‐control products achieved similar results. Therefore, selamectin was safe and effective against sarcoptic mange and ear mites in dogs. Funding: Pfizer Animal Health.
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