All can cause pulmonary eosinophilia except-: (A) Necator americanus, (B) Trichinella spiralis, (C) Ankylostoma duodenale, (D) Ascaris lumbricoides
Answer is B. Trichnella does not pass through the lungs during its life cycle. The other three pass through the lungs as a pa of their life cycle. They cause Loffler's syndrome - in which eosinophils accumilate in the lungs in response to parasitic infection. Strongyloides can also cause Loffler's syndrome. Reference: Ananthanarayan and Paniker&;s Textbook of Microbiology Tenth edition