Anonymous wrote:It just isn’t as effective at six months and the baby will still need two more doses. But we had our DD vaccinated early because of travel to Africa at six mo this and she was fine. She’s 14 now.
This. A lot of babies still have residual immunity from their mothers' at six months, so the vaccine won't take. That's why you still need the two scheduled doses after 1 year. Many countries recommend a six month vaccine in addition to the ones on the US/CDC schedule. I wouldn't be surprised if the CDC revises our schedule to add the six month vaccine as well.
DD got an early MMR vaccine due to international travel. Then she got the regular schedule. No issues.