Symptomatic bacteriuria due to Ureaplasma and Mycoplasma in adults

314 women, and 52 men were screened during 18 months, for the presence of Ureaplasma urealyticum and Mycoplasma hominis in a midstream specimens of urine. All the patients were adults with symptoms of urinary tract infection who consulted a physician at a Primary Health Center "José Castro Villagrana" in Tlalpan, D.F. México. Ureaplasma urealyticum was isolated in 54 (17.1%) of the women and 8 (15.4%) of the men. Only Escherichia coli and Gardnerella vaginalis were isolated more frequently in both groups, 36.6% and 25.4%, respectively in women and 58.5% and 30.8% in men Mycoplasma hominis was isolated in 12 (3.8%) in women and 4 (7.7%) in men. The bacteriuria due to fastidious bacteria or Ureaplasmas that is not detected by routine culture methods are relatively common and would not necessarily respond to antibiotic treatment for conventional urinary tract pathogens.