You have asked a very important question. The real question that needs answering is whether your son's immune system is normal or not. His WBC seems rather low and while this may be due to a viral infection it would be worthwhile testing his white blood cell function and his immunoglobulin levels. It is unusual for a boy of 7 years old to get such severe and frequent illnesses.It is possible that he did have Swine flu and after this illness his immunity is low.In the meantime he should start on an iron supplement and he should be on a probiotic such as Probiflora for 1 month to boost his immunnity. It would also be worthwhile giving him Scotts emulsion which is effective in reducing viral infections due to its high vitamin A content.
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