A special vaccines court" hears cases brought by parents who claim their children have been harmed by routine vaccinations. The court buffers Wyeth and other makers of childhood-disease vaccines from ... litigation risk. The legal shield, known as the National Childhood Vaccine Injury Compensation Program, was put into place in 1986. Vaccines ... are poised to generate $21.5 billion in annual sales for their makers by 2012, according to France's Sanofi-Aventis SA, a leading producer of inoculations. Vaccines' transformation into a lucrative business has some observers questioning whether the shield law is still appropriate. Critics ... underscored the limited recourse families have in claiming injury from vaccines. "When you've got a monopoly and can dictate price in a way that you couldn't before, I'm not sure you need the liability protection," said Lars Noah, a specialist in medical technology. Kevin Conway, an attorney at Boston law firm Conway, Homer & Chin-Caplan PC, which specializes in vaccine cases and brought one of the recent autism suits, says the lack of liability for the pharmaceutical industry compromises safety. Even if they had won their cases, the families of autistic children wouldn't have been paid by the companies that make the vaccines. Instead, the government would have footed the bill, using the funds from a tax levied on inoculations.