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Association With Prenatal Cervical Mycoplasma hominis and Chlamydia trachomatis Infections

Stuart M. Berman, MD; H. Robert Harrison, DPhil, MD, MPH; W. Thomas Boyce, MD; William J. J. Haffner, MD; Marguerite Lewis, RN; Julia Barney Arthur, RN

JAMA. 1987;257(9):1189-1194.

Abstract
We studied associations of Mycoplasma hominis, Ureaplasma urealyticum, and Chlamydia trachomatis genital infections with pregnancy outcomes, controlling by logistic and multiple linear regression for known risk factors and for the presence of the other two infections. A sample of 1204 Navajo women enrolling for prenatal care had endocervical C trachomatis, M hominis, and U urealyticum cultures and serum samples taken at enrollment and when possible after 30 weeks. Low birth weight (<2500 g) was associated with M hominis infection among women with a history of spontaneous abortion. Mycoplasma hominis infection was also associated with postpartum endometritis, but only among women undergoing a cesarean section (odds ratio, 4.7; 95% confidence intervals, 1.22 to 18.3). Although women with recent C trachomatis infection (IgM titer>1:32 on either sample or IgG seroconversion) were at greater risk of low birth weight (19% [3/16]) than women with chronic infection (4.5% [6/133]; relative risk, 4.2), this subgroup at risk was small (11% of women with classifiable C trachomatis infection). Mycoplasma hominis and C trachomatis infections may be important preventable causes of adverse pregnancy outcomes in identifiable subgroups of women.

(JAMA 1987;257:1189-1194)

Author Affiliations
From the Division of Sexually Transmitted Diseases, Centers for Disease Control, Atlanta (Drs Berman and Harrison); the Department of Pediatrics, College of Medicine, University of Arizona, Tucson (Dr Boyce and Mss Lewis and Arthur); and the Department of Obstetrics and Gynecology, Uniformed Services of the Health Sciences, Gallup, NM (Dr Haffner).

Footnotes
Reprint requests to the Technical Information Services, Center for Prevention Services, Centers for Disease Control, Atlanta, GA 30333.

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