A new method to detect Strongyloides stercoralis from human stool.

概要

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A new method for the detection of Strongyloides larvae was established. A small amount of stool was placed in the center of an agar plate and was incubated at 37°C for 24 hr. Characteristically aligned bacterial colonies or furrows left by crawling Strongyloides larvae appeared on the agar surface are the positive findings. The larvae gathered in a well made on positive plate were identified. By using this method, Strongyloides was detected in 46 cases (4.5%) out of 1, 017 healthy adults. Whereas, it was detected in 0 and 3 cases (0 and 0.3%) by direct stool smear method and filter paper technique, respectively. Examination of 246 cases by this agar plate method and formalinether method (MGL) revealed that 14 cases (5.7%) were positive by the former and 2 cases (0.8%) by the latter. Agar plate method is not laborious nor expensive, and recommendable for mass examination and for the detection of asymptomatic carriers.
日本熱帯医学会の論文