The number of Irish measles cases has risen by more than 200% in the last three years.
New figures from UNICEF show 169 million children worldwide haven't gotten the jab since 2010.
That's 21.1 million children a year on average.
Hands up if you’ve had at least one vaccination in your life 🙋♂️🙋♀️
Hearts for everyone who replies with the hashtag #VaccinesWork! 💙
By vaccinating our children and ourselves, we are creating a safer world for everyone. pic.twitter.com/SMeeNNPxPK— UNICEF (@UNICEF) April 25, 2019
The charity says there's no excuse for parents not to vaccinate their children against measles.
Executive Director of UNICEF Ireland, Peter Power, says kids who aren't vaccinated are being put at risk:
"All the evidence shows that the measles vaccine is extremely effective. Those children who are not vaccinated are extremely prone to this disease."
This disease is potentially life-threatening for children if they don't get ti within the first 5 years of life.