4.5 Article

Regional Variation of Early-onset Neonatal Group B Streptococcal Disease Prevention Strategies in Mainland China

Journal

PEDIATRIC INFECTIOUS DISEASE JOURNAL
Volume 40, Issue 7, Pages 663-668

Publisher

LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/INF.0000000000003089

Keywords

Streptococcus agalactiae; streptococcal infections; neonatal sepsis; epidemiology; prevention

Funding

  1. National Key Research and Development Program of Reproductive Health & Major Birth Defects Control and Prevention [2016YFC1000400]

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Prevention strategies for early-onset group B Streptococcus neonatal sepsis need to be tailored to different regions in mainland China based on varying rates of GBS colonization and infection. Screening strategies may be more suitable for areas with higher attack rates, while risk factor-based strategies may suffice in regions with lower attack rates in reducing EOGBS incidence.
Background: Prevention strategies can reduce the incidence of early-onset group B Streptococcus (GBS) neonatal sepsis (EOGBS). Rates of GBS colonization and infection vary among regions within China. China has not adopted a unified prevention strategy. Methods: To assess strategies to reduce EOGBS in China, models were developed to quantify residual EOGBS rates with intrapartum antibiotic prophylaxis in infants >= 35 weeks' gestation in risk factor-based and antepartum screening-based strategies. Maternal GBS colonization rates and EOGBS incidence in 3 regions of China (A: Xiamen of Fujian province, B: Shanghai and C: Liuzhou of Guangxi province) were estimated from published data. Results: Estimates for GBS colonization and attack rates were 21.6%, 11.7% and 6.1% and 1.79, 1.79 and 0.58 per 1000 live births for regions A, B and C, respectively. Modeling predicted that strategies including screening cultures beginning at 36 weeks' gestation and intrapartum antibiotic prophylaxis in 90% of eligible parturients could reduce EOGBS incidence to 0.44, 0.50 and 0.16 per 1000 live births in these regions. In region C, the expected EOGBS rate could be reduced to 0.28 per 1000 using a risk factor-based strategy. Conclusions: Different strategies for preventing EOGBS may be needed in different regions of mainland China. Screening strategies may be most appropriate in regions with higher attack rates, even with moderate levels of maternal GBS colonization. In areas with low attack rates, risk factor strategies that reduce morbidity by at least one-third may suffice.

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