In 2014, 115,000 children died from Measles. That’s 13 children every hour, mostly under 5 years old, losing their lives to a vaccine-preventable disease.

Last year, the leaders of some of the wealthiest nations pledged help control and eliminate the most common neglected tropical diseases (NTDs) by 2020.

It takes more than a vaccine to make a successful immunization program. This World Immunization Week, we are taking a look at some of the factors that contribute to effective immunization programs.