Already the proud parents of triplets, Victoria and Tim Lasita had decided they wanted to have "one more."
"I guess we should have been more specific and said one more child, not one more set," said Victoria, 39, who delivered the couple's second set of triplets on Wednesday after 34 weeks of pregnancy.
The Lasitas conceived both sets of triplets naturally, without fertility treatments.
"Holy smokes. Do you know what the odds of that are?" said Dr Glen E. Hofmann, medical director of the Bethesda Centre for Reproductive Health and Fertility in Cincinnati.
The answer: about one in 8 000 for a woman to have triplets naturally, and about one in 64 million of her repeating the feat, according to Hofmann and Dr Sherif G. Awadalla, medical director of the Institute for Reproductive Health.
"Everybody seems to be doing well," said the father, 48, who watched the Caesarean-section births in a delivery room filled with 18 medical personnel.
"You take what God gives you," said the mother. "And this is what he's decided we can handle." – (Sapa)
First triplets, then quads
2-wombed woman has triplets