Keebler C, Chatwani A, Schwartz R
Am J Obstet Gynecol. 1983 Mar 1;145(5):596-9. doi: 10.1016/0002-9378(83)91203-6.
Papanicolaou-stained cervicovaginal smears from 478 women with intrauterine contraceptive devices (IUDs) in place were reviewed for the presence of Actinomyces colonies. The overall infection rate was 12.6%. Plastic IUDs had a significantly higher infection rate than that of Copper 7 IUDs. The infection rate was found to increase with the duration of use of IUDs. The presence or absence of Actinomyces was not related to age, race, parity, previous abortions, or financial status of the patients.
对478名佩戴宫内节育器（IUD）的女性的巴氏染色宫颈阴道涂片进行检查，以确定是否存在放线菌菌落。总体感染率为12.6%。塑料宫内节育器的感染率明显高于铜7宫内节育器。发现感染率随宫内节育器使用时间的延长而增加。放线菌的存在与否与患者的年龄、种族、产次、既往流产史或经济状况无关。
