All can cause pulmonary eosinophilia except-
A. Necator americanus
B. Ankylostoma duodenale
C. Trichinella spiralis
D. Ascaris lumbricoides
Correct answer : C. Trichinella spiralis
Trichnella does not pass through the lungs during its life cycle. The other three pass through the lungs as a part of their life cycle. They cause Löffler’s syndrome – in which eosinophils accumilate in the lungs in response to parasitic infection. Strongyloides can also cause Löffler’s syndrome.