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: Social & Preventive Medicine
All vaccines are contraindicated in pregnancy except 
Select and explain. 
A. BCG  Vaccine, B. Measles Vaccines, C. OPV Vaccine, D. Yellow fever vaccine
D: Yellow fever vaccine
Answer: D: Yellow fever vaccine 
Explanation: All live vaccines are contraindicated in pregnancy except yellow fever vaccine.