Pediatrics All of the following statements about congenital rubella are true except A IgG persists for more than 6 months B IgM antibody present at bih C Most common anomalies are hearing and hea defects D Increased risk of congenital malformation if infection occur after 16 weeks. 💡 Explanation All of the following statements about congenital rubella are true except ✓ Correct Answer: D. Increased risk of congenital malformation if infection occur after 16 weeks.