Last year at least 7,335 American are known to have developed serum hepatitis, a sometimes fatal liver ailment that is spread by blood transfusions and sometimes by poor sanitation or unsterile hypodermic needles. Last week Dr. Saul Krugman, chairman of the pediatrics department at New York University Medical Center, announced that he and two colleagues have succeeded in immunizing a small group of youngsters against the debilitating disease.
Krugman's work was made possible by that of another researcher, Dr. Baruch Blumberg, who in 1963 identified a small viruslike particle called the Australia antigen,...