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. 2004 Nov 27;329(7477):1277–1280. doi: 10.1136/bmj.329.7477.1277

Table 2.

Risk factors for early onset Group B streptococcal infection in preterm infants

• Group B streptococcal infection in mother's previous baby
• Group B streptococcal infection in mother's vagina or urine during pregnancy
• Mother has fever during labour
• Prolonged rupture of amniotic membranes (> 18 hours)