1. Centers for Disease Control and Prevention (CDC). Early-onset and late-onset neonatal group B streptococcal disease—United States, 1996–2004. MMWR Morb Mortal Wkly Rep 2005; 54: 1205–1208.
2. Centers for Disease Control and Prevention (CDC). Trends in perinatal group B streptococcal disease - United States, 2000–2006. Centers for Disease Control and Prevention (CDC). MMWR Morb Mortal Wkly Rep 2009; 58: 109–112.
3. Weston EJ, Pondo T, Lewis MM, Martell-Cleary P, Morin C, Jewell B et al. The burden of invasive early-onset neonatal sepsis in the United States, 2005–2008. Pediatr Infect Dis J 2011; 30: 937–941.
4. Puopolo KM, Eichenwald EC . No change in the incidence of ampicillin-resistant, neonatal, early-onset sepsis over 18 years. Pediatrics 2010; 125: e1031–e1038.
5. Centers for Disease Control and Prevention (CDC). Prevention of perinatal group B streptococcal disease: a public health perspective. Centers for disease control and prevention. MMWR Recomm Rep 1996; 45: 1–24.