Serum immunoglobulin levels in normal Sudanese children.

Immunoglobulin levels were estimated in 138 infants, of whom 33 were normal newborn and 105 were healthy infants one to 24 months of age. Most of the newborn were delivered after a normal pregnancy. In all the infants relatively high levels of cord IgM were found. Similarly, relatively high levels of IgA were found in cord blood in 72% of the subjects studied. Physiological hypogammaglobulinaemia was not found in the early months of life. Adult levels of IgM were developed by six months of age while 36% of the adult levels of IgA and 57% of the adult levels of IgG were reached by two years of age.