Volume 27, Issue 1
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



The anthelmintic drugs mebendazole (Vermox®) and levamisole were tested in patients for their possible ovicidal effects on the eggs of and . The patients studied were 20 Africans of Sierra Leone, and 11 children of Nassau, Bahamas. Egg counts were made before treatment, and for 5 consecutive days following treatment. Eggs were incubated in 2.5% aqueous potassium dichromate and percentages of larval development were determined. Mebendazole completely inhibited the development of the eggs of by day 3 of the follow-up period. The ovicidal action of mebendazole on the eggs of was determined to be 64.8% by day 5 of the follow-up study. Levamisole had little (11.6%) ovicidal action on the eggs of and no ovicidal activity for .


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  • Accepted : 13 Aug 1977

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