South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde
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Twenty-three children with chronic pulmonary symptoms following acute lower respiratory tract infection were investigated with a view to establishing their immune status. Cell-mediated immunity was depressed in the majority. Serial testing over some months showed improvement in some and fluctuation or non-recovery in others. The leucocyte function, gamma-globulin and immunoglobulin levels were normal.