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: Pediatrics
[{'content': 'Mastitis in infants ? \nSelect and explain. \nA. Treated with antibiotics, B. More common in boys, C. It is a congenital infection, D. Most common organism is E Coli', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Treated with antibioticsMastitis (infection of breast tissue) typically occurs in infants after 2 months of age. During the first 2 weeks of life, it occurs with equal frequency in males and females; thereafter, it is more common in girls, with a female:male ratio of approximately 2:1.The majority of cases of neonatal mastitis are caused by Staphylococcus aureus; less common causes include gram-negative enteric organisms (e.g. Escherichia coli, Salmonella), anaerobes, and Group B Streptococcus", 'role': 'assistant'}]