Autoimmune disease and chronic lymphocytic leukemia: autoimmune hemolytic anemia, pure red cell aplasia, and autoimmune thrombocytopenia. Diehl LF(1), Ketchum LH.Author information: (1)Department of Medicine, Walter Reed Army Medical Center, Washington, DC 20307-5001, USA.utoimmune disease and chronic lymphocytic leukemia: autoimmune hemolytic anemia, pure red cell aplasia, and autoimmune thrombocytopenia. Diehl LF(1), Ketchum LH. Author information:
A premature baby is one who is born too early, before 37 weeks. Premature babies may have more health problems and may need to stay in the hospital longer than babies born later. They also may have long-term health problems that can affect their whole lives. About 1 in 10 babies is born prematurely each year in the United States.
Birth is considered premature, or preterm, when it occurs before 37 weeks of gestation (development time in the womb). Normal, full-term gestation is 37 to 42 weeks. Those final weeks in the womb are crucial for healthy weight gain and development of the babyâs vital organs. Late preterm babies (born at 35 to 37 weeks gestation) may look fully mature, but they still have greater risks of health problems than babies born full term.