BELLFLOWER, Calif. — The octuplets born to a Southern California woman last week are now the longest-surviving bunch in U.S. history.

Nadya Suleman's octuplets turned a week old today at Kaiser Permanente Bellflower Medical Center.

The six boys and two girls — whose names have not yet been released — were born weighing between 1 pound, 8 ounces and 3 pounds, 4 ounces.

Kaiser Permanente spokeswoman Socorro Serrano said the babies are all doing well.

The country's first set of octuplets was born to Nkem Chukwu of Texas on Dec. 20, 1998. A week later, the tiniest of the infants died of heart and lung failure.

The baby, named Odera, weighed only 10.3 ounces at birth. The surviving seven siblings celebrated their 10th birthdays in December.