Analysis of females with Chlamydia trachomatis infections attending a sexually transmissible infection clinic in Singapore in 2010.
BACKGROUND
Chlamydia (Chlamydia trachomatis) is the most commonly diagnosed sexually transmissible infection (STI) in Singapore, with rising incidence.


METHODS
Random sampling was performed on all chlamydia-positive samples collected from female patients who attended a women's clinic from January 2010 to December 2010. Some 250 electronic medical records were analysed. Population demographics, sexual histories, symptoms, diagnostic methods and management were recorded.


RESULTS
One hundred and forty-two (56.8%) patients were under 25 years of age. The predominant race diagnosed with Chlamydia cervicitis were Chinese (116 cases, 46.4%) followed by 86 (34.4%) Malays and 20 (8%) Filipinos. Sixty-three (25.2%) were skilled workers and (47) 18.8% were students. Professionals and office workers together formed 68 (27.2%) of the patients. Some 248 (99.2%) patients were heterosexual and 2 (0.8%) patients were bisexual; 229 (91.6%) patients had regular partners, 18 (7.2%) had casual partners and 3 (1.2%) had both. Concurrency prevalence accounted for 49 cases (19.6%) and condom use was less common. Patients were generally asymptomatic, with 114 (45.5%) presenting with symptoms. One hundred and eight (43.2%) patients had 2-5 sexual partners in their lifetime. Patients with a termination made up 12% of our cohort. This episode of infection was the first diagnosis of an STI for 198 (79.2%) patients; 24 (9.6%) of patients had been previously diagnosed with chlamydia.


CONCLUSIONS
Chlamydia infection was most prevalent in skilled workers and their regular partners with heterosexual practices under 25 years old. Most patients had 2-5 sexual partners and did not use condoms consistently or at all.
Department of STI Control, 31 Kelantan Lane, Singapore 200031.
Lynette C M
LC
Low
Feng Ling G
FL
Tan
Ellen
E
Chan
Martin
M
Chio
Roy
R
Chan
Priya
P
Sen
D000293:Adolescent; D000328:Adult; D000554:Ambulatory Care Facilities / Q000706:statistics & numerical data*; D002690:Chlamydia Infections / Q000188:drug therapy* / Q000453:epidemiology*; D002692:Chlamydia trachomatis; D005260:Female; D006801:Humans; D015994:Incidence; D015995:Prevalence; D012749:Sexually Transmitted Diseases / Q000188:drug therapy* / Q000453:epidemiology*; D012846:Singapore / Q000453:epidemiology; D055815:Young Adult