Mycoplasma hominis and Ureaplasma urealyticum. Comparison of media for isolation and prevalence among patients with nongonococcal nonchlamydial genital infections.

One hundred and twelve genital specimens were cultured for Mycoplasma hominis and Ureaplasma urealyticum using a conventional system and the Mycotrim GU biphasic culture system. Both systems gave the same percentage of recovery (60%) of Mycoplasma hominis, while the recovery rates of Ureaplasma urealyticum were 95% with the conventional system and 83% with the Mycotrim GU. The media contamination was similar for both systems. The average time for Mycoplasma isolation and identification was shorter with the Mycotrim GU in comparison with the conventional system. The prevalence of Mycoplasma hominis in 91 patients with nongonococcal nonchlamydial urethritis and/or cervicitis was 8%, that of Ureaplasma urealyticum was 31%.