Note. n : number of patients; %: percentage.
*Group A: reactive only to ampicillin and amoxicillin.
Group B: reactive to benzylpenicillin, ampicillin, and amoxicillin.
Group C: reactive to both penicillins and cephalosporins.
Table 3. Haplotype association study for the association between HLA-DRB3 haplotypes and the risk of delayed and immediate hypersensitivity to penicillins