Mass vaccination programs aim to reduce the spread, contraction and effect of infectious disease by building what?

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Multiple Choice

Mass vaccination programs aim to reduce the spread, contraction and effect of infectious disease by building what?

Explanation:
Herd immunity is the idea behind mass vaccination. When a large portion of the population is immune, the disease has fewer opportunities to spread, which slows or stops transmission. This lowers the number of people who get infected (contraction) and reduces the overall impact of the disease on the community, including severe cases and outbreaks. It also protects those who cannot be vaccinated or who don’t respond well to vaccines because transmission is less likely to reach them. The other terms don’t describe this population-wide protective effect.

Herd immunity is the idea behind mass vaccination. When a large portion of the population is immune, the disease has fewer opportunities to spread, which slows or stops transmission. This lowers the number of people who get infected (contraction) and reduces the overall impact of the disease on the community, including severe cases and outbreaks. It also protects those who cannot be vaccinated or who don’t respond well to vaccines because transmission is less likely to reach them. The other terms don’t describe this population-wide protective effect.

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