Ballard R C, Schoub B D, Schneider J, Robins-Browne R M, Koornhof H J
S Afr Med J. 1977 May 14;51(20):702-6.
The incidence of infections with Neisseria gonorrhoeae, Chlamydia trachomatis and mycoplasmas has been assessed in White men with urethritis who were attending a Johannesburg clinic for sexually transmitted diseases. Infection with N. gonorrhoeae was demonstrated in 54% of 212 patients with urethritis. C. trachomatis was isolated from 37% of patients with non-gonococcal urethritis, and from 25% with proven gonococcal infection. Although T-mycoplasmas were isolated significantly more often from patients with urethritis (41%) than from controls (23%) (P less than 0,05) their role in the aetiology of urethritis is uncertain.
对前往约翰内斯堡一家性传播疾病诊所就诊的患尿道炎白人男性，评估了淋病奈瑟菌、沙眼衣原体和支原体感染的发生率。在212例尿道炎患者中，54%被证实感染淋病奈瑟菌。沙眼衣原体在37%的非淋菌性尿道炎患者以及25%已证实淋病奈瑟菌感染的患者中分离得到。虽然T-支原体在尿道炎患者中分离得到的频率（41%）显著高于对照组（23%）（P<0.05），但其在尿道炎病因学中的作用尚不确定。
