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Title: Neonatal tetanus incidence in China, 1996-2001, and risk factors for neonatal tetanus, Guangxi Province, China.
Author: Chai F, Prevots DR, Wang X, Birmingham M, Zhang R.
Journal: Int J Epidemiol; 2004 Jun; 33(3):551-7. PubMed ID: 15155708.
Abstract:
BACKGROUND: In China during 1995-1996 widespread tetanus toxoid (TT) mass vaccination of women of childbearing age in high-risk areas was conducted and neonatal tetanus (NT) surveillance was initiated as part of NT elimination efforts. Despite a subsequent decrease in the estimated rate of NT, the NT disease burden remains high in poorer areas of China. METHODS: To describe the recent epidemiology of NT in China and estimate its risk, we analysed national surveillance data in China 1996-2001 and conducted a case-control study in one high-risk county (Bobai): 60 hospitalized cases were sex- and calendar-birth year matched to 60 controls from the same or neighbouring villages. RESULTS: Reported national annual NT incidence decreased from 0.21/1000 live births (LB) in 1997 to 0.16/1000 LB in 2001. Case mothers were more likely to be aged >30 years (odds ratio [OR] = 6; 95% CI: 2.2, 20.2), unschooled (OR = 3.2; 95% CI: 1.1, 11.6), and with an annual income of <1000 yuan ($125 USD) (OR = 6.0; 95% CI: 1.9, 25.6). Only 28% of control mothers and 12% of case mothers reported any TT vaccination. In multivariate analysis, relative to hospital delivery, cases had a 64-fold increased odds of home delivery by a family member or neighbour (95% CI: 8.4, 982.2), and a 13-fold increased odds of home delivery by a traditional birth attendant (95% CI: 1.6, 322.6). CONCLUSIONS: Improved access to clean deliveries in high-risk areas is critically needed in China. Nonetheless, targeted TT vaccination appears to have helped reduce NT incidence in China.

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