<prompt> All can cause pulmonary eosinophilia except-Necator americanusTrichinella spiralisAnkylostoma duodenaleAscaris lumbricoides  <response>: 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 Lofflers syndrome - in which eosinophils accumilate in the lungs in response to parasitic infection. Strongyloides can also cause Lofflers syndrome. Reference: Ananthanarayan and Paniker;s Textbook of Microbiology Tenth edition 