<P> Causes of infant mortality directly lead to the death . Environmental and social barriers prevent access to basic medical resources and thus contribute to an increasing infant mortality rate ; 99 % of infant deaths occur in developing countries , and 86 % of these deaths are due to infections , premature births , complications during delivery , and perinatal asphyxia and birth injuries . Greatest percentage reduction of infant mortality occurs in countries that already have low rates of infant mortality . Common causes are preventable with low - cost measures . In the United States , a primary determinant of infant mortality risk is infant birth weight with lower birth weights increasing the risk of infant mortality . The determinants of low birth weight include socio - economic , psychological , behavioral and environmental factors . </P>
<P> Causes of infant mortality directly lead to the death . Environmental and social barriers prevent access to basic medical resources and thus contribute to an increasing infant mortality rate ; 99 % of infant deaths occur in developing countries , and 86 % of these deaths are due to infections , premature births , complications during delivery , and perinatal asphyxia and birth injuries . Greatest percentage reduction of infant mortality occurs in countries that already have low rates of infant mortality . Common causes are preventable with low - cost measures . In the United States , a primary determinant of infant mortality risk is infant birth weight with lower birth weights increasing the risk of infant mortality . The determinants of low birth weight include socio - economic , psychological , behavioral and environmental factors . </P>
the leading cause of infant death in the us is
the leading cause of infant death in the us is
a primary determinant of infant mortality risk is infant birth weight with lower birth weights increasing the risk of infant mortality
a primary determinant of infant mortality risk is infant birth weight with lower birth weights increasing the risk of infant mortality