Toxocariasis in dogs, its zoonotic importance and chemotherapy
2005
Afzal, S.
A total of 600 faecal and hair samples (200 of dog faecal, 200 dog hair and 200 dog owner faecal samples) were collected and examined for the presence of Toxocara canis eggs. Toxocara canis eggs were found in 74 (37%) faecal samples, 25 (12.5% in hair samples and in 47 (23.5%) dog owners' faecal samples. Prevalence was higher in pups and children than adults. Twenty-five eggs were recovered, of which 2.1% were embryonated, 12.5 percent were embryonating. The maximum densities of the embryonating and embryonated eggs were 180 and 20 EPG per gram of hair respectively, much higher than the densities reported for soil samples. It is suggested that dogs infected with T. canis may infect people by direct contact. Part-II deals with chemotherapeutic trails. A total of 60 dogs positive for toxocariasis were divided randomly into three groups, A, B and C (control group) each with 20 dogs. Dogs in group A and B were treated with Ivermectin and Levamisole hydrochloride, respectively. The efficacy of the drugs was calculated on the basis of reduction in the number of ova discharged in faeces. Results showed that Ivermectin and Levamisole hydrochloride were and 97.3 percent and 97.4% effective respectively. Levamisole hydrochloride is much cheaper than Ivermectin and it was slightly more effective.
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