Vaccine question ?
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%
本題當年無人回答
這則提問從 2021 年發出後,直到知識+ 在 2021 年 5 月關站, 都沒有等到任何一則回答。它就這樣留在這裡。