Urinary tract infection (UTI) and Sexually Transmitted Infection (STI) are common pathologies whose symptomatology often overlaps complicating a correct diagnosis.The aim of this study was to detect STI causative microorganisms and urethritis pathogens in urines from urine cultures with more than 50 leukocytes/field. The period of study: 7th of February -15th of March of 2018. METHODS: A total of 3218 urine cultures were processed. Before culture, all urines were tested for urinalysis. Based on pathologic urinalysis or clinical criteria , urine was cultured on chromID CPS Elite (bioMérieux) and was incubated 24-48h, 37ºC. All urine with negative urine culture result with more than 50 leukocytes/field were centrifugated (2 ml, 10 min., 1200 rpm) and tested for STI by real-time PCR (Anyplex II STI-7, Seegene) which detects seven microorganisms: Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG), Mycoplasma genitalium (MG), Mycoplasma hominis (MH), Ureaplasma urealyticum (UU), Ureaplasma parvum (UP), and Trichomonas vaginalis (TV). MH, UU and UP results were confirmed by culture using Mycofast to provide a quantitative interpretation. RESULTS A total of 32 urines were tested for STI. The age of patients was between 23 and 90 years, the average age was 56. 10 (31%) of them were positive for STI: 2 MG, 3 UU, 3 UP, 2 MH. Of the 3 samples with UP detection, 2 had >10.000 UCC/mL by Mycofast. The rest of them had negative, invalid result or Mycofast couldn’t be done. No CT, NG or TV were detected. CONCLUSIONS: In this study we found 2 cases of MG. It is a sexually transmitted bacterium that causes nongonococcal urethritis and requires antibiotic treatment. Moreover, we found UP, UU and MH which have also been related to nongonococcal urethritis. The diagnosis of sexually transmitted bacterium and Mycoplasma/Ureaplasma sp from patients with UTI diagnosis improves the antibiotic treatment and decreases the STI transmission.

COULD A DIAGNOSIS OF URINARY TRACT INFECTION (UTI) BE A SEXUALLY TRANSMITED INFECTION (STI)?