The potential of using recombinant DNA species-specific probes for the identification of tropicalLeishmania

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Abstract
Human leishmaniasis is a world-wide public health problem with more than 400000 new reported cases/year (Anon, 1984) in the tropics and subtropics. Were (1985) has estimated that Leishmaniases affect about 20 million people in the Third World. In hospitals where treatment is available, initially all positive cases are treated equally; it is the prognosis and follow-up that varies according to the causative organism. A wide variety of species or subspecies ofLeishmaniamay be present in a small verrucose lesion developing after an infected sandfly bite or appear in lesions as the disease progresses. Depending on whichLeishmaniais present a clinial decision must be made whether to treat with drugs of varying toxicity or not.