What is the recommended waiting period after an MMR booster before attempting pregnancy?

What is the recommended waiting period after an MMR booster before attempting pregnancy?

• A. One week
• B. Two weeks
• C. Four weeks
• D. Eight weeks

Answer: (C)

Four weeks is recommended because the MMR vaccine is a live attenuated shot. After receiving it, guidance favors waiting about 28 days before attempting pregnancy to minimize any theoretical risk to early fetal development and to allow the body to mount a full immune response. This interval is considered sufficient; shorter waits don’t meet the advised precaution, while longer waits don’t add another proven benefit.

Four weeks is recommended because the MMR vaccine is a live attenuated shot. After receiving it, guidance favors waiting about 28 days before attempting pregnancy to minimize any theoretical risk to early fetal development and to allow the body to mount a full immune response. This interval is considered sufficient; shorter waits don’t meet the advised precaution, while longer waits don’t add another proven benefit.