Hypersensitivity including gelatin. Anaphylactic or anaphylactoid reactions to neomycin. Febrile resp illness or other active febrile infection. Active untreated TB. Patients receiving immunosuppressive therapy. Blood dyscrasias, leukemia, lymphomas or other malignant neoplasms affecting bone marrow or lymphatic systems. Primary & acquired immunodeficiency states eg, AIDS or other clinical manifestations of HIV infection; cellular immune deficiencies; hypo- & dysgammaglobulinemic states. Severely immunocompromised individuals inadvertently vaccinated w/ measles-containing vaccine. Family history of congenital or hereditary immunodeficiency. Pregnancy; avoid pregnancy for 1 mth following vaccination.