Excerpt:

The team found that babies who took this concoction had a significantly lower risk of developing sepsis—a life-threatening condition where infections trigger body-wide inflammation, restricted blood flow, and organ failure. Sepsis is one of the biggest killers of newborn babies, ending around 600,000 lives every year when they’ve barely begun. Some proportion of these cases begin in the gut, and probiotics might be able to prevent them by ousting harmful microbes, or by stopping benign ones from crossing into the bloodstream and causing infections.

That is from an article published in The Atlantic, At Last, a Big, Successful Trial of Probiotics, link here