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Sexually Transmitted Diseases:
doi: 10.1097/OLQ.0000000000000085
Original Study

Cost-effectiveness of Integrated Routine Offering of Prenatal HIV and Syphilis Screening in China

Owusu-Edusei, Kwame PhD, PMP*; Tao, Guoyu PhD*; Gift, Thomas L. PhD*; Wang, Ailing MD; Wang, Linhong MD; Tun, Ye PhD; Wei, XiaoYu MPH§; Wang, LiMing MD§; Fuller, Serena MPH§¶; Kamb, Mary L. MD*; Bulterys, Marc MD§∥

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Abstract

Background

In China, recent rises in syphilis and HIV cases have increased the focus on preventing mother-to-child transmission of these infections. We assess the health and economic outcomes of different strategies of prenatal HIV and syphilis screening from the local health department’s perspective.

Methods

A Markov cohort decision analysis model was used to estimate the health and economic outcomes of pregnancy using disease prevalence and cost data from local sources and, if unavailable, from published literature. Adverse pregnancy outcomes included induced abortion, stillbirth, low birth weight, neonatal death, congenital syphilis in live-born infants, and perinatal HIV infection. We examined 4 screening strategies: no screening, screening for HIV only, for syphilis only, and for both HIV and syphilis. We estimated disability-adjusted life years (DALYs) for each health outcome using life expectancies and infections for mothers and newborns.

Results

For a simulated cohort of 10,000 pregnant women (0.07% prevalence for HIV and 0.25% for syphilis; 10% of HIV-positives were coinfected with syphilis), the estimated costs per DALY prevented were as follows: syphilis-only, $168; HIV-and-syphilis, $359; and HIV-only, $5636. The estimated incremental cost-effectiveness ratio if an existing HIV-only strategy added syphilis screening (i.e., move from the HIV-only strategy to the HIV-and-syphilis strategy) was $140 per additional DALY prevented.

Conclusions

Given the increasing prevalence of syphilis and HIV among pregnant women in China, prenatal HIV screening programs that also include syphilis screening are likely to be substantially more cost-effective than HIV screening alone and prevent many more adverse pregnancy outcomes.

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