TABLE 2

Rates of EO Infections per 1000 LBs According to Birth Weight

BW, g
401–1500a1501–2500>2500All
All10.961.380.570.98
GBS2.080.380.350.41
E coli5.090.540.070.28
  • a Rates previously reported by the NRN for VLBW (401–1500 g) infants were: 1991–1993: all pathogens 19.3 per 1000 LBs, GBS 5.9 per 1000 LBs, E coli 3.2 per 1000 LBs; 1998–2000: all pathogens 15.4 per 1000 LBs, GBS 1.7 per 1000 LBs, E coli 6.8 per 1000 LBs; 2002–2003: all pathogens 17.0 per 1000 LBs, GBS 1.8 per 1000 LBs, E coli 7.0 per 1000 LBs.9,13 Previously reported rates for all pathogens included all treated CoNS; rates for 2006–2009 excluded infants with CoNS except those with >1 blood culture positive for CoNS or treated polymicrobial infections involving CoNS. The changes in rates of GBS and E coli between 2002–2003 and 2006–2009 among VLBW infants were not significant.