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: Gynaecology & Obstetrics
Most commonly veically transmitted organism of the following is? 
Select and explain. 
A. Herpes simplex, B. CMV, C. Rubella, D. Human papilloma virus
B: CMV
Answer: B: CMV 
Explanation: CMV REF: Harrison's 17ed p. 48, Williams Obstetrics 22nd edition Chapter 58. Infections Cytomegalovirus; this ubiquitous DNA herpesvirus eventually infects most humans. CMV is the most common cause of perinatal infection in the developed world, and evidence of fetal infection is found in from 0.2 to 2 percent of all neonates