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Vaccines ensure healthy people stay healthy, removing a major obstacle to development
Immunological benefits of vaccination “spill over” to non-vaccinated populations
![Gavi/2013/Adrian Brooks/Nigeria](/sites/default/files/background-image/2019/RS17160_Adrian-Brooks_bn_0.jpg)
Vaccines ensure healthy people stay healthy, removing a major obstacle to development
Immunological benefits of vaccination “spill over” to non-vaccinated populations