Very rarely would you need to repeat a dose or restart a series of immunizations because a dose was delayed.
catch-up immunization schedule
Reducing missed opportunities to vaccinate can help get everyone caught up and vaccinated and protected as quickly as possible.
Anti-vaccine misinformation spread to stories about the guy who was exposing the problems with anti-vaccine misinformation!
Talk to your pediatrician if your child gets exposed to measles to make sure he doesn’t need post-exposure prophylaxis to keep him from getting sick, even if you think he is up-to-date on his vaccines.