1. Suppose a vaccine had an average take of 80%, degree of 100% and waning of 10% a year. How many vaccinees do you expect to be protected one year after the population has been vaccinated?
A. 70%
B. 72%
C. 80%
D. 100%
Vaccine question ?
2021-02-03 7:29 pm
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收錄日期: 2021-04-24 08:33:42
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