THE purpose of this presentation is to review the information on the uses of normal serum gamma globulin in the management of measles, viral hepatitis, rubella and varicella in the light of recently acquired data and knowledge and to draw some conclusions concerning the future uses of gamma globulin in the management of these diseases. Measles In 1954 Enders and Peebles1 made a historic contribution when they adapted the Edmonston strain of the measles virus to tissue culture. Four years later, on the basis of this development, Enders and his associates2 produced a vaccine consisting of live, attenuated measles virus. . . .