A baby has been born to a previously infertile couple in Ukraine using a new type of three-person IVF. The Times reports that doctors in Kiev used a method called pronuclear transfer in what is a world first. However, it is not the first baby born with DNA from three parents. <br/><br/>The baby, born on 5th January, is thought to be the world's second modern three-parent baby. Another child was created using a slightly different method in Mexico last year. Doctors developed three-person IVF to help women who are at risk of passing on serious genetic disorders, called mitochondrial disease, to have a healthy child. <br/><br/>The UK has already passed laws to allow three-person IVF for couples with mitochondrial diseases, although no such baby has been born in Britain yet. <br/>