It is not within the scope of this review to consider the supportive therapy that is given to patients suffering from severe attacks of chickenpox. However, some of the other measures that have been used are worth mentioning. It would seem logical to use γ-globulin, preferably zoster immune globulin, in patients with severe chickenpox particularly where this complicates an underlying disease such as leukaemia. The severity of the chickenpox might be due to a prolonged viraemia which could be diminished by γ-globulin treatment. In this respect, Loebl and Taylor (1966) thought that γ-globulin from convalescent chickenpox patients was helpful in the treatment of a severe case of chickenpox.