Rubella Antibodies in Human Serum: Detection by the Indirect Fluorescent-Antibody Technique

Abstract
Antibodies for rubella virus were detected in human serum and titrated by the indirect method of immunofluorescence; a chronically infected, continuous line of monkey kidney cells was used as antigen. Positive reactions were obtained with serums from convalescent patients or persons who had been exposed to the virus while serums from patients in the acute stage of the disease and those from unexposed individuals were negative