A California woman has given birth to quadruplets in what doctors described as a one-in-a-million event - because she did not use fertility drugs and two babies are identical.
Luz Maria Marmolejo, 39, delivered the three boys and one girl by Caesarean section at Lucile Salter Packard Children’s Hospital at Stanford University. The babies were delivered 27 weeks into her pregnancy and weighed between 2.2lbs and 2.6lbs each.
They have infections and are hooked to ventilators to help them breathe, but doctors said they were doing well considering how early they were born.
Doctors hope the babies will be healthy enough to leave the hospital by their original due date of December 16.
Fertility drugs have increased the number of multiple births in the US, but the odds of giving birth to quadruplets without them is around one in 600,000, said Dr James Smith, a perinatologist at Packard and clinical associate professor of obstetrics and gynaecology at Stanford University.
The odds nearly double if the set includes identical twins, he said.