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Efficacy of ivermectin against Syphacia obvelata (Nematoda) in mice

Published online by Cambridge University Press:  18 November 2009

D. A. Ostlind
Affiliation:
Merck Institute for Therapeutic Research, P. O. Box 2000, Rahway, New Jersey 07065, USA
M. A. Nartowicz
Affiliation:
Merck Institute for Therapeutic Research, P. O. Box 2000, Rahway, New Jersey 07065, USA
W. G. Mickle
Affiliation:
Merck Institute for Therapeutic Research, P. O. Box 2000, Rahway, New Jersey 07065, USA

Abstract

Ivermectin was evaluated against natural and artificial pinworm (Syphacia) infections in mice. Ivermectin given in the diet for 6 days at 0·0005% was 99% effective against both immature and adult worms. A diet level of 0·0004% reduced immature and mature pinworm by 99 and 75%, respectively but 0·0001% was inactive. One oral dose of 2·0mg/kg was 100 and 97% effective against gravid females and immature worms, respectively. A dose of 1·0 mg/kg was 96 and 66% effective against the same parasitic stages. A similar effect was observed against adult male worms where 94 and 86% were removed by one oral dose of ivermectin at 2·0 and 1·0 mg/kg, respectively.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1985

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