This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition, Subject name: Pediatrics
Breast milk is known to transmit 
Select and explain. 
A. Tuberculosis, B. CMV, C. Varicella, D. Rubella
B: CMV
Answer: B: CMV 
Explanation: CMV has been demonstrated in breast milk. Approximately 2/3 of CMV-seronegative breast-fed infants may become infected with CMV. The risk is more in a preterm infant. Thus the use of fresh donor milk for feeding a preterm infant is contraindicated unless the milk is known to be CMV-negative.Ref: Page 215; Nelson textbook of pediatrics; 18th edition