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Loss of maternal measles antibody in black South African infants in the first year of life--implications for age of vaccination. 1991

P Kiepiela, and H M Coovadia, and W E Loening, and P Coward, and S S Abdool Karim
Department of Paediatrics and Child Health, University of Natal, Durban.

In order to investigate the feasibility of measles vaccination before the age of 9 months the duration of passive immunity against measles was estimated by conducting a longitudinal study of measles antibody levels in 20 black neonates delivered at term. Measles serum antibody (IgG) was measured by enzyme-linked immunosorbent assay in the mother at childbirth and on consecutive samples taken from the infants from birth until 9 months of age. Protective measles antibody level was defined as greater than 200 mIU. Unprotective levels were found in 88% (95% confidence interval (CI) 81-99%) of 6-month-old infants, while at 9 months all were susceptible. The mean antibody level was 192 mIU (CI 104-348%) at 4 months; 34 mIU (CI 15-73%) at 6 months and 13 mIU (CI 6-24%) at 9 months of age. Our data support the recent World Health Organisation recommendation to immunise children in developing countries at 6 months with the 'high titre' Edmonston-Zagreb measles vaccine, since most infants in our study had lost passive immunity against measles by this age.

UI MeSH Term Description Entries
D007074 Immunoglobulin G The major immunoglobulin isotype class in normal human serum. There are several isotype subclasses of IgG, for example, IgG1, IgG2A, and IgG2B. Gamma Globulin, 7S,IgG,IgG Antibody,Allerglobuline,IgG(T),IgG1,IgG2,IgG2A,IgG2B,IgG3,IgG4,Immunoglobulin GT,Polyglobin,7S Gamma Globulin,Antibody, IgG,GT, Immunoglobulin
D007112 Immunity, Maternally-Acquired Resistance to a disease-causing agent induced by the introduction of maternal immunity into the fetus by transplacental transfer or into the neonate through colostrum and milk. Fetal Immunity, Maternally-Acquired,Maternally-Acquired Immunity,Neonatal Immunity, Maternally-Acquired,Immunity, Maternally Acquired,Fetal Immunities, Maternally-Acquired,Fetal Immunity, Maternally Acquired,Immunity, Maternally-Acquired Fetal,Immunity, Maternally-Acquired Neonatal,Maternally Acquired Immunities,Maternally Acquired Immunity,Maternally-Acquired Fetal Immunities,Maternally-Acquired Fetal Immunity,Maternally-Acquired Immunities,Maternally-Acquired Neonatal Immunities,Maternally-Acquired Neonatal Immunity,Neonatal Immunities, Maternally-Acquired,Neonatal Immunity, Maternally Acquired
D007115 Immunization Schedule Schedule giving optimum times usually for primary and/or secondary immunization. Immunization Schedules,Schedule, Immunization,Schedules, Immunization
D007223 Infant A child between 1 and 23 months of age. Infants
D007231 Infant, Newborn An infant during the first 28 days after birth. Neonate,Newborns,Infants, Newborn,Neonates,Newborn,Newborn Infant,Newborn Infants
D008297 Male Males
D008457 Measles A highly contagious infectious disease caused by MORBILLIVIRUS, common among children but also seen in the nonimmune of any age, in which the virus enters the respiratory tract via droplet nuclei and multiplies in the epithelial cells, spreading throughout the MONONUCLEAR PHAGOCYTE SYSTEM. Rubeola
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000367 Age Factors Age as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or the effect of a circumstance. It is used with human or animal concepts but should be differentiated from AGING, a physiological process, and TIME FACTORS which refers only to the passage of time. Age Reporting,Age Factor,Factor, Age,Factors, Age

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