The immune response in iron-deficient children. Isohaemagglutinin titres and antibody response to immunization.

The primary antibody response of iron-deficient children to diphtheria and typhoid immunization was measured. In 5 children immunized with diphtheria toxoid, there was no increase in antitoxin titre. Of 8 children who were given typhoid vaccine, 6 showed an increase in Salmonella typhi O agglutinin titre. All the iron-deficient children had normal isohaemagglutinin titres.