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Diagnosis

Authoring team

  • microfilariae in skin snips of nodules

  • Onchocerca seen on slit lamp examination of the anterior chamber of the eye

  • a positive Mazzotti's test

  • there is often an eosinophilia

  • polymerase chain reaction

Serology is of little use, as positivity in the general population of affected areas is likely to be high.

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