In what doctors called a “one in a million case”, a Brazilian teen gave birth to a set of twins with two different biological fathers! According to reports the 19-year-old mum of twins had sex with two different men on the same day, and gave birth to the twins nine months later.

The woman’s doctor claimed that there are only 20 such cases across the world, making the young mum and her situation extremely rare.

Reportedly, the case is scientifically called heteroparental superfecundation where a woman gives birth to twins with two biological fathers. According to the National Library of Medicine, such a case occurs when the second ova released during menstrual cycle is further fertilized by the sperm of different man during different sexual experience.

According to reports, the woman, who prefers to be anonymous, started doubting about who the father of the twins was. When the twins were 8-months-old, she got the DNA from the man who she thought was their father.

However, the test results came positive for only one of the two children. Surprised and taken aback, she remembered that she was with another man the same day, and asked him to take the test.

The second test came positive for the second man, and the secret of one in a million-case got revealed.

The Facts of the Matter

A 19-year-old teen in Brazil is currently the proud mum of 16-months-old twins. She is also part of a million-in-one case, where her twins have two separate biological fathers, a revelation that she and her doctors, both were shocked by.

The 19-year-old teen from Brazil, who remains anonymous as per her wishes, gave birth to twins who have two separate fathers. Shockingly enough, the woman had sex with two men on the same day, due to which the one-in-a-million case occurred.

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Shocking Paternity Test Results

Reportedly, when the twins were 8-months-old, the new mum was skeptical about who was the biological father of the twins. Acting on her suspicion, she asked the man she thought was the father of the twins, to take a paternity test.

“Didn’t Know…”

The new mum was shocked when the paternity test only turned up positive for one of the twins. A New York Post report quoted the Brazilian teen saying, “I remembered that I had had sex with another man and called him to take the test, which was positive. I was surprised by the results. I didn’t know this could happen. They are very similar.”

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Doctor Explains the Rare Case

Speaking about the unique case, her medic Dr. Tulio Jorge Franco mentioned that such a development occurs when two eggs from the same mother are fertilized by sperm cells of two different men. While the babies share their mother’s genes, they grow in different placentas.

For the curious ones, the woman’s case has a scientific name called ‘Heteropaternal superfecundation’. It is an extremely rare phenomenon which takes place when the second ova released during menstrual cycle is fertilized by the sperm cells of a different man during different sexual experience.

The Brazilian teen’s medic claimed that he never thought he would be seeing a case such as this in his entire lifetime. He also added that across the world, there are only but 20 such cases.

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One Father Taking Care of Twins

While the twins are 16-months-old now, the curious case was revealed by the doctor to the local media earlier last week. Meanwhile, the new mum told local media that one of the fathers is taking care of both the children, and also registering at the official registry.

“He takes care of both of them, helps me a lot to create and gives them all the necessary support they need,” she was quoted saying.


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