Abstract
Summary
A skin test antigen for infectious hepatitis (IH) has been prepared from amniotic fluid of chick embryos infected with IH virus. Thus far, it has given apparently specifically positive skin reactions in all the individuals with past histories of spontaneous or induced IH tested. In contrast, the incidence of positive tests among cases of past serum hepatitis was no greater than that found among an adult group chosen at random.
Get full access to this article
View all access options for this article.