Microfilarial density in Guatemalan onchocerciasis patient's skin with special reference to the hourly intake by Simulium ochraceum.

概要

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The present work was designed to assess the relationship between the hourly O. volvulus microfilarial density (mfd) in patient's skin and the hourly microfilarial intake by S. ochraceum. From two experiments employing 14 patients, it is suggested that there may be a little elevation of mfd during the period from evening through mid-night, but not pronounced. The microfilarial intake by the fly revealed two peaks, one in the morning and the other in the afternoon. Thus, the pattern of microfilarial intake did not correlate with the present diurnal pattern of mfd. The hourly intake was briefly discussed in relation to the biting activity and the parous rates of S. ochraceum. This report is the first case dealing with the hourly microfilarial intake by the black fly. Further such information would be required for a better understanding of the transmission mechanism of onchocerciasis in given endemic areas.
日本熱帯医学会の論文