The Occurrence of Microfilaria Ozzardi in Panama

Abstract
Summary 1. Microfilaria ozzardi was found in the blood of 44.5 per cent of 119 Indians examined in the Tuira River basin, Darien Province, Panama. 2. The infection rate in native villages in the same region varied from 2 to 57 per cent and averaged 9.9 per cent in the 244 natives examined. 3. A few cases of infection with M. ozzardi were found in the Chagres River valley, Panama, but all of these were recent arrivals from the Atrato River valley, Colombia. 4. No evidence was found that M. ozzardi is pathogenic or in any way a significant problem of public health importance. 5. Southeastern Panama is an endemic center of infection with M. ozzardi heretofore unknown in the geographical distribution of the parasite.

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