International Journal of STD & AIDS > Volume 19, Number 3 > Pp. 155-158

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Original research articles

Asymptomatic urethral infection in male sexually transmitted disease clinic attendees

J T H T Yu BMBCh MRCP , W Y M Tang FHKAM FRCP, K H Lau FHKAM FRCP, L Y Chong FRCP FHKAM and K K Lo FRCP FHKAM

Social Hygiene Service, Centre for Health Protection, Department of Health, Hong Kong, China

Correspondence to: Dr J T H T Yu, Kowloon, Hong Kong, People's Republic of China Email: drjohnyu{at}yahoo.co.uk

The purpose of this study is to determine the prevalence of asymptomatic male patients with urethral infections attending a government sexually transmitted infection clinic in Hong Kong and their microbiological profile. A total of 274 consecutive male patients without any symptoms for urethral infections were recruited. A questionnaire was used to record the symptoms, sexual history and demographics. Further assessment, including urethral smear for Gram stain, gonococcal culture and polymerase chain reaction (PCR) for Chlamydia trachomatis (CT), Mycoplasma genitalium (MG) and Ureaplasma urealyticum (UU) were performed.

In 274 asymptomatic patients, 36 patients had non-gonococcal urethritis (NGU) and two patients had positive gonoccocal culture. Among the asymptomatic patients with NGU, there were 6 (16.6%), 10 (22.8%) and five (13.9%) patients with positive PCR for CT, UU and MG, respectively. In addition, there were 14 asymptomatic patients with positive PCR for CT but without evidence of NGU. In conclusion, urethral infections were identified in a significant number of asymptomatic male patients and therefore, routine screening for this group is warranted.

Key Words: asymptomatic • urethritis • men • Hong Kong

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