The smallest intestinal adult nematode is: (A) Enterobius vermicularis, (B) Necator americanus, (C) Strongyloides stercoralis, (D) Trichuris trichiura
Answer is C. Strongyloides stercoralis has the most complex life cycle of all the intestinal nematodes--and the greatest risk of acute, overwhelming infection. The adults measure only 2 mm in length, making them the smallest of the intestinal nematodes.Ref: Sherris microbiology; 6th edition; Page no: 858