Kimberly and Craig Fugate were expecting Kenleigh , Kristen and Kayleigh . But Kelsey , born with her sisters on February 8 , was a complete surprise . The identical quadruplets were born via cesarean section in the Winfred L. Wiser Hospital for Women and Infants at the University of Mississippi Medical Center in Jackson , Mississippi . `` They had gotten the three out and they said , 'More feet , ' '' the mother told CNN affiliate WAPT . `` I said , 'No ! ' It was an instant shock . '' The odds of spontaneous quadruplets -- conceived without fertility assistance -- are 1 in 729,000 , according to Dr. James Bofill , Kimberly Fugate 's physician and a professor of maternal fetal medicine at the University of Mississippi . The odds in this case were even slimmer as the Fugate girls are identical , meaning they split from a single egg . `` Those odds are incalculable , '' Bofill said in a hospital press release . The last known set of identical quadruplets was born in Germany in January 2012 . Experts estimate there are 50 to 60 sets worldwide . You may know the Mathias quads -- Grace , Emily , Mary Claire and Anna -- who are in the eighth grade and appeared on the Discovery Health Channel 's `` Super Quads . '' And perhaps you remember a Lifetime reality show called `` Four of a Kind , '' which featured identical quadruplets Megan , Kendra , Sarah and Calli Durst , of Buffalo , Minnesota . The Fugates were originally surprised to learn they were pregnant at all , according to WAPT . Then in November , the 42-year-old mom was told she was having triplets . The fourth baby managed to keep her existence a secret until Fugate went into labor at 28 weeks . Kenleigh Rosa was born at 7:55 , weighing 2 pounds , 1 ounce . Kristen Sue was born at 7:57 weighing 2 pounds , 4 ounces . Kayleigh Pearl was born at 7:58 weighing 2 pounds , 8 ounces . And Kelsey Roxanne was born a minute later weighing 2 pounds , 6 ounces . Bofill told The Clarion Ledger the hidden quad was a first in his 27-year career . `` I was very embarrassed , obviously , '' Bofill said . `` The news was sent to me by one of my fellows . I thought she was kidding . '' The quadruplets join older sister Katelyn , who is 10 years old . It 's unclear when they 'll be able to go home . `` Typically , when babies are born prematurely , doctors tell the families to expect them to stay in the ( neonatal intensive care unit ) until their original due date , which in this case would be May 2 , '' said hospital spokeswoman Jennifer Hospodor . `` It is possible that some or all of the girls would be stronger enough to go home before that , or have to stay longer . It depends on how they develop over the next 12 weeks . ''
Identical quadruplets were born to a Mississippi mom on February 8 . Kenleigh , Taylor , Taylor and Kelsey , are doing well , hospital says . The fourth child was hidden to her and her parents until March .