What is the effect of measles and herd immunity as measured by mobility? make better research queston that can be gathered secondary evidence realted to research to the claim: implementing a vaccination program sucesfullt is a challenge.
What are the key factors that contribute to the challenges of implementing successful vaccination programs for measles, and how can these challenges be overcome?
How does the implementation of a vaccination program affect the incidence of measles, and what role does herd immunity play in this context?
