November 17 is worldwide Preemie Awareness Day. More than half a million American babies are born prematurely, which means they are born before 37 weeks gestation. Premature birth can often lead to severe health problems because the baby's critical organs have not have time to fully develop in the womb. Preemies do not have strong immune systems, which means they are more likely to develop infections. Preterm infants are more likely ...