题目
题目
单项选择题

Question at position 64 Herd immunity …is a vaccination program for cattlecan come from vaccination or natural infectionis not important for protecting the populationall of the aboveClear my selection

选项
A.is a vaccination program for cattle
B.can come from vaccination or natural infection
C.is not important for protecting the population
D.all of the above
查看解析

查看解析

标准答案
Please login to view
思路分析
Begin by identifying what herd immunity means in public health terms. It refers to the protection of a population from a disease when a sufficient proportion of individuals are immune, reducing transmission. Option 1: 'is a vaccination program for cattle' is mislea......Login to view full explanation

登录即可查看完整答案

我们收录了全球超50000道考试原题与详细解析,现在登录,立即获得答案。

类似问题

更多留学生实用工具

加入我们,立即解锁 海量真题独家解析,让复习快人一步!