Molecular epidemiology of selected sexually transmitted infections

Hamid Jalal1, Andrew Delaney, Neil Bentley

  • 1Clinical Microbiology & Public Health Laboratory, Box 236, Addenbrooke's Hospital Hills Road, Cambridge, UK.

Insights

Ureaplasma parvum (UP) and Ureaplasma urealyticum (UU) are common in the genital tract, with UP more prevalent in women. Their high prevalence suggests they may be commensals rather than pathogens.

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Genitourinary Medicine

Background:

  • Neisseria gonorrhoeae (NG), Chlamydia trachomatis (CT), Trichomonas vaginalis (TV), and Mycoplasma genitalium (MG) are known genital pathogens.
  • The role of Ureaplasma urealyticum (UU) and Ureaplasma parvum (UP) in genital pathology remains unclear.

Purpose of the Study:

  • To investigate the prevalence of common genital infections including UU and UP.
  • To compare the prevalence of these infections between genders and across age groups.

Main Methods:

  • A prospective study of 1,718 patients attending a Genitourinary Medicine (GUM) clinic.
  • Real-time PCR assay modified for simultaneous detection of TV, NG, MG, CT, UU, and UP DNA in genital swabs.

Main Results:

  • Ureaplasma parvum (UP) was detected in 37% and Ureaplasma urealyticum (UU) in 16% of patients.
  • Infections were more prevalent in women (70%) than men (38%), and decreased with age.
  • UP prevalence was significantly higher in women (54%) than men (18%).

Conclusions:

  • The high prevalence of UU and UP suggests they may act as commensals in the genital tract.
  • Further research is needed to elucidate the specific role of UU and UP in genital pathology.

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