article_snippet: I was also vaccinated as a child and received the booster shot three years before my son birth, and was told my medical professionals this was sufficient.
article_snippet: Booster doses are given at 4 years and 10-15 years.
article_snippet: Babies are at greatest risk of infection until Babies can have at least two doses of the vaccine (minimum 4 months old) as the mother
article_snippet: Epidemics occur every 3 to 4 years.
article_snippet: In unvaccinated populations, Epidemics can be very large.
article_snippet: In vaccinated populations, outbreaks are smaller, with greatly reduced mortality and morbidity, and may continue to occur every 3 to 4 years or be more widely spaced,' the department's notifiable disease report said.