Past and Current STDs in a Thai Adolescent Population
MANEE PIYA-ANANT, M.D.*,
NET-ANONG LECKYIM, B.A.*,
OUSANEE WATCHARAPRAPAPONG, B.Sc.*,
URAIWAN KOSITANON, M.Sc.**,
NUANCHAN PATRASUPAPONG, B.Sc.*,
SUMALEE WATTANAPULLSUK, B.A.*
Affiliation : * Family Health Research Center, Department of Obstetrics and Gynaecology,
** Division of Virology, Department of Microbiology, Faculty of Medicine. Siriraj Hospital. Mahidol University.
Bangkok I 0700, Thailand.
AbstractThe study of premarital sexual intercourse in 350 Thai students aged 18-20 years in com-
mercial schools showed that 151 subjects (43.1%) having premarital sexual intercourse - 50.3 per
cent never used condoms, 25.8 per cent used sometimes and 23.8 per cent used everytime. Their
sexual partners were girl friends in 78.1 per cent and sex workers in 18.5 per cent. The average age
of first sexual intercourse was 16.6 years. There were 87 subjects who had symptoms similar to
sexually transmitted diseases. Single void-urine was tested for past and present C. trachomatis
infection. There were 8 of 350 subjects (2.3%) with positive results for the leukocyte esterase acti-
vity in urine samples but only 2 cases (0.6%) were positive for C. trachomatis antigen and anti-
body. Detection of C. trachomatis DNA was negative in all urine samples. The antibody detection
in urine samples was 11.1 per cent and in blood samples 22 per cent. There was no correlation with
r = 0.3 of optical density values between urine and blood samples.
Keywords : Adolescent, Premarital Sexual Intercourse, Chlamydia! trachomatis, Single Void-urine.
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