Noah N D
Br Med J. 1976 Jan 17;1(6002):128-9. doi: 10.1136/bmj.1.6002.128.
The incidence of whooping cough among immunised children under the age of six and among children of the same age who were not fully immunised was ascertained by analysing whooping-cough notifications from several health authorities. In the first three years of the study the results showed that attack rates were much higher in children who were not fully immunised than in those who were. This finding suggests that current vaccines provide young children with substantial protection against whooping cough.
通过分析来自几个卫生部门的百日咳通报,确定了6岁以下免疫儿童和未完全免疫的同龄儿童中百日咳的发病率。在研究的前三年,结果表明,未完全免疫的儿童的发病率远高于完全免疫的儿童。这一发现表明,目前的疫苗为幼儿提供了对百日咳的实质性保护。