[mass noun]infestation with threadworms of a type found in tropical and subtropical regions, chiefly affecting the small intestine and causing ulceration and diarrhoea 类圆线虫病
The worms belong to the genus Strongyloides, class Phasmida, in particular S. stercoralis 引起此病的线虫为类圆线虫属,尾感器纲,尤指粪类圆线虫