The prevalence of genital Chlamydia trachomatis and mycoplasmal infections during pregnancy in an American Indian population.

The epidemiology of cervical infection with Chlamydia trachomatis, Mycoplasma hominis, and Ureaplasma urealyticum among a group of pregnant American Indian women was investigated. The prevalences of these microorganisms were 24-30% for C. trachomatis, 50% for M. hominis, and 80% for U. urealyticum. These rates are unusually high for an unselected sample. Infection with C. trachomatis was correlated with younger age but not with primigravidity or educational level. Neither M. hominis nor U. urealyticum infection was correlated with younger age, primigravidity, or level of education. The possible consequences of the increased prevalences of C. trachomatis, M. hominis, and U. urealyticum in this group of American Indians are of concern and are being investigated.