PubMed · 4555061
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P J Zuidema. 1972-01-01. [Dr. A. Lichtenstein].. https://pubmed.ncbi.nlm.nih.gov/4555061/
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A new membrane filter concentration technique for the detection and quantification of Onchocerca volvulus microfilariae in skin snips was compared for sensitivity and efficiency with a widely used "standard" technique. A field study was carried out in five villages in an onchocerciasis focus north-east of the town of Sokodé, Mô river valley, Togo. Use of the new technique resulted in a substantial rise in the observed prevalence and density of microfilariae.