Facts about the Measles (MMR) Vaccine | UCLA Health
What you need to know about measles vaccination
Measles Vaccine: What Is It Made Of? | 30 STK | NBC News
Measles Outbreak: Vaccination In America | Long Story Short | NBC News
Measles vaccine is a vaccine that prevents measles. After one dose 85% of children nine months of age and 95% over twelve months of age are immune. Nearly all of those who do not develop immunity after a single dose develop it after a second dose. When rates of vaccination within a population are greater than ~92% outbreaks of measles typically no longer occur; however, they may occur again if rates of vaccination decrease. The vaccine's effectiveness lasts many years. It is unclear if it becomes less effective over time. The vaccine may also protect against measles if given within a couple of days of exposure to measles.