Mothers who are negative for the Kell1 antigen develop antibodies after being exposed to red blood cells that are positive for Kell1. Over half of the cases of<unk> owing the anti-Kell antibodies are caused by multiple blood transfusions, with the remainder due to a previous pregnancy with a Kell1 positive baby.
Hemolytic disease of the newborn 
Neonatal meningitis
Neonatal hepatitis
Michelin tire baby syndrome
Neonatal diabetes
Shaken baby syndrome
Twin-to-twin transfusion syndrome
Neonatal toxic shock-like exanthematous disease