This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infectious Diseases, Subject name: Gynaecology & Obstetrics
Maximum HIV transmission risk to fetus is during- 
Select and explain. 
A. In utero, B. During breast feeding, C. During child birth by vaginal delivery, D. During child birth by cesarean section
C: During child birth by vaginal delivery
Answer: C: During child birth by vaginal delivery 
Explanation: Ans. is 'c' i.e., During child birth by vaginal delivery HIV transmission during pregnancy:o Vertical transmission of HIV in neonates is about 14 - 25%.o Transplacental (vertical) transmission occurs in# 20% of patients before 36weeks# 50% of patients during delivery# 30% in peripartum