A baby boy in the US was born at 21 weeks and one day and thus became the earliest baby in the world to survive, writes the BBC on its website.
Curtis Mins was born in Birmingham, Alabama last year and weighed just 420 grams.
The Guinness Book of Records has confirmed that Curtis, who is now 16 months old, has set a new record.
A full-term baby is usually born at 40 weeks so Curtis is almost 19 weeks premature.
His mother, Michelle Butler, was in pain and rushed to hospital on July 4, 2020, as fireworks from the Independence Day celebration lit up the sky.
At noon the next day he gave birth to twins, Curtis and Shasia, but she died a day later.
The hospital said that in such cases it usually gives parents the opportunity to hold their tiny babies in their arms for as long as they live.
But with a survival rate of less than 1%, Curtis was transferred directly to the neonatal ICU.
After three months, he disconnected from the ventilator and was discharged last April after 275 days of hospitalization.
Therapists needed to teach him how to breathe and use his mouth to eat.
Curtis, who has three older siblings, still needs supplemental oxygen and a feeding catheter, but doctors say he is in good health.
The previous record was held by a baby from Wisconsin, Richard Hutchinson, who was born at 21 weeks and two days.
Before Richard, the record holder for 34 years was an infant born in Ottawa, Canada at 21 weeks and five days.
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