One-stop service for antenatal syphilis screening and prevention of congenital syphilis in Ulaanbaatar, Mongolia: a cluster randomized trial.
BACKGROUND
This cluster randomized trial was performed to test whether one-stop service could better prevent congenital syphilis than the conventional antenatal screening service in Mongolia.


METHODS
Out of 14 antenatal clinics in 6 districts of Ulaanbaatar, 7 were randomly selected for the one-stop service and the remaining for the conventional service. Intervention clinics provided on-site rapid syphilis testing and immediate treatment for positive cases and their partners. In control clinics, syphilis screening services with routine off-site rapid plasma regain testing and case management were followed. Analysis was intention to treat.


RESULTS
Of 3850 antenatal women recruited in each group, the proportion of syphilis testing at the first visit and third trimester was over 99% in the intervention group and 79.6% and 61.5% in the control group, respectively (P <0.001 for both periods). Correspondingly, syphilis cases detected in the intervention group were 73 (1.9%) and 20 (0.5%) for the first visit and third trimester, respectively, and 27 (0.9%) and 2 (0.08%) in the control group; and 98.9% (92/93) of the detected cases in the intervention group and 89.6% (26/29) in the control group were adequately treated (P = 0.02). The corresponding treatment rates for sexual partners were 94.6% and 55.2% (P <0.001). One congenital syphilis case out of 3632 deliveries in the intervention group, compared to 15 of 3552 in the control group, was diagnosed, a reduction of 93.5% (95% confidence interval, 66.0%-98.6%).


CONCLUSIONS
One-stop services increased the detection rate of syphilis, treated more positive women and their partners, and effectively reduced the rate of congenital syphilis.
Department of Human Reproduction and Medical Genetics, State Research Center on Maternal and Child Health, Bayangol District, Ulaanbaatar, Mongolia. baymun2001@yahoo.com
Bayalag
B
Munkhuu
Tippawan
T
Liabsuetrakul
Virasakdi
V
Chongsuvivatwong
Edward
E
McNeil
Radnaabazar
R
Janchiv
D000328:Adult; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D042241:Early Diagnosis; D005260:Female; D006801:Humans; D018445:Infectious Disease Transmission, Vertical / Q000517:prevention & control*; D008403:Mass Screening / Q000379:methods*; D008986:Mongolia; D010401:Penicillin G Benzathine / Q000627:therapeutic use; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000517:prevention & control*; D011263:Pregnancy Trimester, Third; D011296:Prenatal Diagnosis / Q000379:methods*; D012747:Sexual Partners; D013590:Syphilis, Congenital / Q000175:diagnosis* / Q000517:prevention & control* / Q000635:transmission
D000900:Anti-Bacterial Agents; D010401:Penicillin G Benzathine