Vaccines provide a direct benefit to the consumers being vaccinated,namely immunity from disease.Given this clear incentive to vaccinate,why do governments perceive a need to take steps to promote vaccinations?

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The Answer of Vaccines provide a direct benefit to the consumers being vaccinated,namely immunity from disease.Given this clear incentive to vaccinate,why do governments perceive a need to take steps to promote vaccinations?

Vaccines Provide a Direct Benefit to the Consumers Being Vaccinated,namely