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The most common form of birth defects are congenital heart defects. This article describes the causes, symptoms, and treatments of congenital heart defects. Cleft Lip and Cleft Palate. The 4th most common birth defect is a cleft lip or palate.
All parents are at risk of having a baby with a birth defect, regardless of age, race, income or residence. In the US (and many other developed nations), 2% to 3% of babies are born with a medically significant birth defect.The infants with birth defects include many with heart defects, cleft lip or palate, Down syndrome, spina bifida, and limb defects.irth defects are present in one of every five babies that die in the US. How a particular birth defect affects a child varies and depends greatly on the severity of the defect and whether or not other medical problems are present.