Disease prevented
Measles is a highly contagious viral illness that can cause pneumonia, encephalitis and death, particularly in young children. Vaccination has dramatically reduced global measles deaths.
Doses and timing
WHO recommends two doses of measles-containing vaccine. Timing varies by country: many schedules give the first dose at 9–12 months and the second at 15–18 months or at school entry. Always follow your national schedule.
Effectiveness and reactions
Two doses are about 97% effective at preventing measles. Common reactions include soreness, mild fever and rash; serious adverse events are rare. People with certain immune conditions need individual clinical advice.
Where to find local guidance
Consult your national immunization programme: CDC (US), Universal Immunisation Programme (India), or the Kenya National Vaccines and Immunization Program.