Tauxe R V, McDonald R C, Hargrett-Bean N, Blake P A
Division of Bacterial Diseases, Center for Infectious Diseases, Atlanta, GA 30333.
Am J Public Health. 1988 Nov;78(11):1432-5. doi: 10.2105/ajph.78.11.1432.
The annual reported isolation rate of Shigella flexneri decreased from 1964 to 1973, but has remained constant since then at 1 per 100,000. Between 1975 and 1985, the median age of males from whom S. flexneri was isolated rose from 5 to 26 years. During this time, the isolation rate of S. flexneri rose more than five-fold among men, did not change in adult women, and decreased in children. By 1985, 23 per cent of reported S. flexneri isolates came from men aged 20-49. Increased male homosexual transmission of S. flexneri is a possible explanation for these findings.
1964年至1973年,弗氏志贺菌的年度报告分离率有所下降,但自那时起一直保持在每10万人1例的水平。1975年至1985年期间,分离出弗氏志贺菌的男性中位年龄从5岁升至26岁。在此期间,弗氏志贺菌在男性中的分离率上升了五倍多,成年女性中没有变化,儿童中则有所下降。到1985年,报告的弗氏志贺菌分离株中有23%来自20至49岁的男性。弗氏志贺菌在男性同性恋中传播增加可能是这些结果的一个解释。