Neonatal infections are infections of the newborns. It may occur during the prenatal development or before the first month after birth. During birth, if the child swallowed the body fluids, bacteria or virus may affect the newborn’s immune system and leads to neonatal infections. Sepsis is a most common neonatal infection. It is a blood or bloodstream infection and It can be caused by bacteria (Escherichia coli, Listeria).