Quadruplets Are Just As Rare
In the Czech Republic, it has been found that quintuplets are born only once every 480 years. The chances of giving birth to quadruplets here are one in seven million. They decided to look at these statistics around the world.
Vitro Fertilization
Giving birth to quintuplets is usually rare and is due to fertility treatment like In Virto Fertilization. However, Kinova conceived these babies naturally and the answer is probably found in her genes.