Published online by Cambridge University Press: 15 May 2009
Experiments reported here were performed on the sera of thirty-three volunteers who were infected or inoculated intranasally or intramuscularly in groups of five to nine with one of two enteroviruses, namely, echovirus 11 and coxsackievirus A21 or with one of three rhinoviruses, namely, M viruses P.K. and ECHO 28, and H virus D.C. Antibody responses occurred against the virus administered, and rarely against the other viruses used. It was concluded that although these viruses are related biologically the antibody responses in the volunteers were largely specific.