Conducting research in the areas of cardiovascular disease, central nervous system disorders, immunology and infectious disease, oncology, respiratory diseases and women's health, its best-selling products are Vytorin, Zetia, Remicade and Nasonex.

CNN: Schering-Plough facts

More than two decades ago, "The families frequently lacked hope, " said Dr. Gwendolyn Scott, director of Pediatric Infectious Disease and Immunology at the University of Miami Miller School of Medicine, who treated the newborns.

CNN: A generation born with HIV/AIDS defies the odds