A new diagnostic agent for microtitration of antimeasles antibodies, m
aking use of polyacrolein microspheres conjugated with purified measle
s virus has been developed. Parallel titration of blood sera of childr
en and adults in latex agglutination test and in routine tests (hemagg
lutination inhibition. passive hemagglutination, immunofluorescent tes
ts) demonstrated a sufficient specificity of the new test, sensitivity
compatible to that of hemagglutination inhibition, and correlation of
the results of all tests.