RT Journal Article SR Electronic T1 Prevalence of chlamydial antibody in Malaysians. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 400 OP 402 DO 10.1136/jcp.43.5.400 VO 43 IS 5 A1 Ngeow, Y F A1 Rachagan, S P A1 Ramachandran, S YR 1990 UL http://jcp.bmj.com/content/43/5/400.abstract AB A single antigen indirect immunofluorescence test was used to screen for chlamydial antibody among Malaysian infants, children, sexually active adults and prostitutes. Of 794 serum samples tested, 361 (45.5%) were positive. Seropositivity increased with age and sexual activity and ranged from 10 to 16% among children under 10 years old to 94.4% among prostitutes. Pregnant women and female adolescents showed a higher antibody prevalence than nonpregnant and older women. Six (13%) infants under 6 months of age were positive for chlamydial IgM.