title: Immunoglobulin M and G antibody responses and persistence of these antibodies in adults after vaccination with a combined meningococcal group A and group C polysaccharide vaccine.
abstract: Adult volunteers were injected with a combined meningococcal group A and group C polysaccharide vaccine. Immunoglobulin M (IgM) and IgG antibody levels against both polysaccharides were measured in serum samples taken 14 days as well as 3 years after vaccination. For both group A and group C polysaccharides, the IgM and IgG antibody levels at 14 days postvaccination were positively related. The IgM-to-IgG antibody ratio at 14 days postvaccination was an indicator for the persistence of both IgM and IgG antibodies during the next 3 years; a high ratio meant a short persistence, whereas a low ratio was associated with a long persistence.
mesh_terms: D000328:Adult; D001428:Bacterial Vaccines / Q000008:administration & dosage / Q000276:immunology*; D004306:Dose-Response Relationship, Immunologic; D006801:Humans; D007074:Immunoglobulin G / Q000096:biosynthesis; D007075:Immunoglobulin M / Q000096:biosynthesis; D007136:Immunoglobulins / Q000096:biosynthesis*; D009345:Neisseria meningitidis / Q000145:classification / Q000276:immunology; D011135:Polysaccharides, Bacterial / Q000008:administration & dosage / Q000145:classification / Q000276:immunology*; D013997:Time Factors; D014611:Vaccination
chemical_list: D001428:Bacterial Vaccines; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D007136:Immunoglobulins; D011135:Polysaccharides, Bacterial