Syphilis intervention in pregnancy: Zambian demonstration project.

Area of Science:

• Public Health
• Infectious Diseases
• Maternal Health

Background:

• High prevalence of infectious maternal syphilis in developing countries like Zambia leads to severe adverse pregnancy outcomes.
• Congenital syphilis causes significant infant morbidity and mortality.

Purpose of the Study:

• To demonstrate the effectiveness of new health education methods and prenatal syphilis screening in reducing adverse pregnancy outcomes.
• To evaluate the impact of an intervention project in Lusaka, Zambia.

Main Methods:

• A pre-intervention, intervention, and post-intervention study design was used with study and control centers.
• Health education was enhanced to promote early prenatal visits.
• On-site syphilis screening and treatment were implemented during pregnancy.

Main Results:

• Overall syphilis seroreactivity was 8.0% with no difference between study and control centers.
• Syphilitic pregnancies had a high risk of adverse outcomes (abortion, stillbirth, prematurity, low birth weight).
• The intervention significantly reduced adverse outcomes attributable to syphilis by nearly two-thirds (28.3% vs. 72.4%).

Conclusions:

• New health education methods improved early prenatal attendance significantly (9.4% to 42.5%).
• Despite suboptimal screening and treatment, the intervention substantially reduced adverse pregnancy outcomes linked to syphilis.
• The intervention is culturally and politically acceptable, cost-effective, and urgently needed for STD control and Maternal and Child Health programs.