Beta-lactams are the most common antibiotics prescribed to children, including penicillin and amoxicillin. They are usually more effective and have fewer side effects than other ty antibiotics. Some children can have reactions to these antibiotics that can be mistaken as an allergy, especially rashes that develop days to weeks later. In such cases, when children take the antibiotic again, they have no problem tolerating it; this is called "delabeling an allergy" with an "oral challenge". Based on our experience with a similar program among inpatients, we are implementing and evaluating an allergy delabeling program for children in the SickKids ED, with the hope and intent to delabel most children of their "allergies" using an oral challenge.
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The primary outcome will be the proportion of patients delabeled among those given the oral provocation challenge.
Timeframe: Up to 2 weeks