This paper explores the relationship between vaccine timeliness and co-administration using the Kenyan 2014 DHS. Why is vaccine timeliness important? Imagine we're looking at vaccination coverage of 5 year-olds in Kenya, and we see that 92% of 5 year-olds received their measles vaccine. That looks great! However, imagine that in fact, only 70% of those... Continue Reading →

The concept of vaccine hesitancy was recently defined by the WHO as the "delay in acceptance or refusal of vaccines despite availability of vaccination services. Vaccine hesitancy is complex and context specific varying across time, place and vaccines. It includes factors such as complacency, convenience and confidence." Vaccine hesitancy makes inherent sense to us in... Continue Reading →