van Mazijk J, Pinheiro F P, Black F L
Trop Geogr Med. 1982 Mar;34(1):3-6.
Measles in an unvaccinated virgin population exacted a death toll of 4.2% which fell particularly hard on the age groups which would ordinarily be protected by maternal antibody. The organ system most affected was quite variable. When the virus spread to a largely vaccinated village it caused only one death. Herd immunity seemed to protect many who were not vaccinated. Vaccine failed to protect 7.7% of the recipients. Some of these failures may have been due to erroneous record, vaccination in the presence of maternal antibody or inactivated vaccine, but most occurred in a few family groups related by genetics and similar past immunological experience.
在未接种疫苗的初免人群中，麻疹造成了4.2%的死亡率，对那些通常会受到母体抗体保护的年龄组影响尤为严重。受影响最严重的器官系统差异很大。当病毒传播到一个大部分人都接种了疫苗的村庄时，只造成了1例死亡。群体免疫似乎保护了许多未接种疫苗的人。疫苗未能保护7.7%的接种者。其中一些接种失败可能是由于记录错误、在存在母体抗体或使用灭活疫苗的情况下接种，但大多数发生在少数几个有遗传关系且过去免疫经历相似的家族群体中。
