Outpatient STD Clinic

Results cont: After PCN was given to those with (-) skin tests, IgE-mediated rxns occurred in 0.5% (18/3997) of those with a (-) hx. 3 pts. had an immediate rxn and 15 had an accelerated rxn. Most had urticaria and no anaphylaxis was observed.

Results cont: After PCN was given to those with (-) skin tests, IgE-mediated rxns occurred in 0.5% (18/3997) of those with a (-) hx. 3 pts. had an immediate rxn and 15 had an accelerated rxn. Most had urticaria and no anaphylaxis was observed.