This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Impoant Bacterial Diseases in Children, Subject name: Pediatrics
Drug of choice for peussis is? 
Select and explain. 
A. Penicillin, B. Ceftriaxone, C. Erythromycin, D. Azithromycin
D: Azithromycin
Answer: D: Azithromycin 
Explanation: Macrolides are preferred agents in Peussis Due to increased risk of infantile hyperophic pyloric stenosis in neonates treated with oral erythromycin, Azithromycin is the preferred agent in all age groups.