When she was born, the baby girl weighed about the same as an apple.

A US hospital on Thursday (NZT) revealed the birth of the girl and said she is believed to be the world’s tiniest surviving micro-preemie, who weighed just 245 grams when she was born in December.

The girl was born 23 weeks and three days into her mother’s 40-week pregnancy.

Doctors told her father after the birth that he would have about an hour with his daughter before she died.

“But that hour turned into two hours, which turned into a day, which turned into a week,” the mother said in a video released by Sharp Mary Birch Hospital for Women & Newborns in San Diego.

More than five months have passed, and she has gone home as a healthy infant, weighing 2 kilograms.

Her ranking as the world’s smallest baby ever to survive is according to the Tiniest Baby Registry maintained by the University of Iowa.

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