Anaphylactic reactions incidence in allergic and atopic patients.

One thousand and thirty penicillin allergics of immediate type and 1344 pollen allergic patients were examined. It was noticed that none of the penicillin allergics suffered from pollen allergy and none of the atopic patients allergic to pollen had penicillin induced allergy of immediate type. The data obtained were processed through the chi square test in correlation with the incidence of penicillin and pollen induced allergy among the normal population. The conclusion was drawn that atopic patients with pollen allergy show a lower risk than the normal population to have allergic reactions of immediate type to penicillin.