Gynaecology & Obstetrics If untreated, percentage of mother to child transmission of HIV during delivery without intervention in a non-breast fed child is: A 40-50% B 10-15% C 15-30% D 5% 💡 Explanation If untreated, percentage of mother to child transmission of HIV during delivery without intervention in a non-breast fed child is: ✓ Correct Answer: C. 15-30%