Advocate Christ Medical Center in suburban Chicago has been busy delivering babies recently.
Between Jan. 18 and Feb. 8, the Oaklawn facility delivered four sets of triplets, according to a story in the Chicago Tribune.
Doctors there said it’s the first time they have delivered so many triplets in such a short period of time, though the number of multiple births at the hospital has increased in recent years because of fertility treatments. Each of the four moms underwent fertility treatments before their babies were born.
About 90 percent of triplets are premature with most delivered at 32 weeks, according to the March of Dimes, the nonprofit organization for pregnancy and baby health. Almost all triplets also have a low birth weight