Gut bacteria can cause life-threatening infections in preterm babies

Babies born prematurely are surviving in increasing numbers, but many withstand complications of early birth only to suffer late-onset sepsis — life-threatening bloodstream infections that strike after infants reach 72 hours of age. The causes of late-onset sepsis have not been clear. But now, researchers at the School of Medicine led by Phillip I. Tarr, MD, and Barbara B. Warner, MD, have discovered that preterm babies’ guts harbor infectious microbes that can cause this condition.