Polio has a basic reproduction number (R0) = 5. The vaccine is very good; in fact, the polio vaccine is 99% effective when two follow-up booster shots are given. What proportion of a population needs to be vaccinated in order for herd immunity to be effective?

Polio has a basic reproduction number (R0) = 5. The vaccine is very good; in fact, the polio vaccine is 99% effective when two follow-up booster shots are given. What proportion of a population needs to be vaccinated in order for herd immunity to be effective?

Lifetime Physical Fitness & Wellness

15th Edition

ISBN:9781337677509

Author:HOEGER

Publisher:HOEGER

Chapter14: Preventing Sexually Transmitted Infections

Section: Chapter Questions

Problem 1AYK

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Health Epidemiology

Health is an essential factor for all human beings. For all humans, health is a critical factor. An individual's ability to meet life's challenges and retain his or her capacity for optimal functioning is reflected in his or her condition of health. This needs the physical, mental, and biological parts of one's constitution to maintain a degree of functioning that has a favorable influence and support for one another.

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Polio has a basic reproduction number (R₀) = 5. The vaccine is very good; in fact, the polio vaccine is 99% effective when two follow-up booster shots are given. What proportion of a population needs to be vaccinated in order for herd immunity to be effective?

Be sure to enter your answer as a decimal, not as a percentage. Enter your answer to the nearest 4 decimal places (example: 0.2345)

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