Full house: Rare set of twins delivered at UAB join twin brothers at home

Six months after giving birth to identical twins, Britney Alba found out she was pregnant with her second set of identical twins. These twins, however, were monochorionic-monoamniotic — one of the rarest types of twins. Videography: Andrea Reiber, Carson Young, Steve Wood and Andrea MabryBritney and Frankie Alba with their twin boys, Luka and Levi. Photography: Steve WoodThe odds of winning the jackpot are approximately one in 292 million. The odds of being struck by lightning are less than one in a million. Britney Alba, an elementary school teacher from Tuscaloosa, Alabama, found herself in an extraordinary situation when she delivered her second set of identical twins at the University of Alabama at Birmingham Women and Infants Center.Defying the unknown odds did not stop there. Alba’s twins were monoamniotic-monochorionic and shared the same placenta, amniotic sac and fluid. MoMo twins are some of the rarest types of twins, making up less than 1 percent of all births in the United...