A central goal of the Academy of Breastfeeding Medicine is the development of clinical protocols for managing common medical problems that may impact breastfeeding success. These protocols serve only as guidelines for the care of breastfeeding mothers and infants and do not delineate an exclusive course of treatment or serve as standards of medical care. Variations in treatment may be appropriate according to the needs of an individual patient.
The antibody responses of children immunized with Haemophilus influenzae type b polysaccharide vaccine were examined in relation to the absence or presence of the Km(1) or G2m(23) immunoglobulin allotype. Ninety-seven children, 12-83 months of age, were immunized. Sera were obtained before immunization and two months later. Total serum antibody to the type b capsule was detected by a radioactive antigen-binding assay. IgG and IgM antibody responses were measured by enzyme-linked immunosorbent assay. Antibody responses to the type b capsule were more than threefold higher in blacks with the Km(1) immunoglobulin allotype compared with those in blacks lacking this allotype (P less than .02). The isotype affected was IgG (P less than .01) and not IgM. Serum concentrations of IgG2, but not of IgG1, also were higher in blacks with Km(1) (P less than .003). In whites there were no significant differences in the total or IgG-specific antibody responses to the type b capsule in relation to the Km(1) or G2m(23) allotype.
This cross-sectional study provides evidence of a correlation between acculturation and immediate postpartum breastfeeding, where higher acculturation is associated with lower odds of exclusive breastfeeding. Additional research is needed to understand how the process of acculturation may affect short- and long-term breastfeeding behavior.
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