This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Loefller's syndrome occurs in all except - 
Select and explain. 
A. Toxocara, B. Toxocara, C. Toxocara, D. Giardia
D: Giardia
Answer: D: Giardia 
Explanation: Ans. is 'd' i.e., Giardia . Loeffler's syndrome was originally repoed as a benign, acute eosinophilic pneumonia of unknown cause characterized by migrating pulmonary infiltrates and minimal clinical manifestations. . It may be secondary to parasites or drugs. . Parasite causing Loeffler's syndrome: - Ascaris - Toxocara - Ancylostoma duodenale - Nector americans - Paragonimus westermani - Strongyloides stercoralis - Echinococcus granulosus