This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: parasitology, Subject name: Microbiology
Sputum examination is not useful in diagnosis of - 
Select and explain. 
A. Trichuris trichura, B. Ank. Duodenale, C. Paragonimiasis, D. Strongyloides
A: Trichuris trichura
Answer: A: Trichuris trichura 
Explanation: Diagnosis of trichuris trichura The characteristic eggs are found in stools. The degree of infection can be assessedby egg counts in all other cases sputum examination is beneficial paragonimus westermani-lung fluke