Article Text

Further observations on the action of fenbendazole against inhibited fourth stage larvae of Ostertagia ostertagi
  1. MB Lancaster,
  2. C Hong and
  3. JF Michel


Two further trials are reported on the effect of fenbendazole on inhibited Ostertagia ostertagi larvae. In the first trial fenbendazole successfully eliminated inhibited burdens of O ostertagi, while in the second trial the effect was variable. As a result of these trials and previous reports it is concluded that a single oral dose of fenbendazole cannot be relied upon to prevent winter (type 2) ostertagiasis.

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