Foster S O, Ward N A, Joarder A K, Arnt N, Tarantola D, Rahman M, Hughes K
Int J Epidemiol. 1980 Dec;9(4):329-34. doi: 10.1093/ije/9.4.329.
A major epidemic of Variola major with an estimated 90 000 cases and 18 000 deaths occurred in Bangladesh in 1972. During a 3-year period methods of active surveillance (market search, outbreak investigation, and house-to-house search) were developed to supplement the passive reporting system. The percentage of smallpox cases detected increased from 11.8% in 1972 to 83% in 1975. Together with the implementation of improved methods of outbreak control, smallpox transmission was interrupted in October 1975.
1972年，孟加拉国发生了一场严重的天花大流行，估计有9万例病例，1.8万人死亡。在三年时间里，开发了主动监测方法（市场搜索、疫情调查和挨家挨户搜索）以补充被动报告系统。检测到的天花病例百分比从1972年的11.8%上升到1975年的83%。随着改进的疫情控制方法的实施，天花传播于1975年10月被阻断。
