The National Childhood Vaccine Injury Compensation Program protects vaccine makers from much of the litigation risk faced by pharmaceutical manufacturers. It limits compensation for death to $250,000. This special vaccines court is called Office of Special Masters at the U.S. Court of Federal Claims. This may be one reason for Pfizer's willingness to pay $68 billion for Wyeth which is amaker of childhood vaccines. Vaccines will generate $21.5 billion in sales by 2012, according to Sanofi-Aventis. Vaccines are biologic products that can't be copied. Wyeth's Prevnar is designed to protect children against 7 strains of pneumococcal disease. It has sales of $2.7 billion projected to grow to $5.5 billion in 2015 according to Sanford C. Bernstein & Co. Vaccines have driven huge reductions in childhood diseases, and the Act is designed to potect makers of vaccines, who suffered from excessive litigation in the 1980's.