ABSTRACT

Herd Immunity   [open pdf - 0B]

From the Document: "When a lot of people in the community are vaccinated against an illness, it makes it harder for the disease to spread. This is because there are fewer people to become infected. This can stop the spread of an illness like the measles or pneumonia."

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Health Services Advisory Group, Inc.
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Health Services Advisory Group, Inc.: https://www.hsag.com/
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