Drug and vaccine allergy

Area of Science:

• Pediatric Allergy and Immunology
• Clinical Immunology
• Vaccinology

Background:

• Many children are labeled with penicillin allergy, leading to avoidance of beta-lactam antibiotics.
• This mislabeling can result in suboptimal treatment for various infections.
• Children with egg allergy are often excluded from influenza vaccination due to trace egg proteins.

Purpose of the Study:

• To evaluate the safety and efficacy of penicillin allergy testing in children.
• To assess the safety of influenza vaccination in children with egg allergy.

Main Methods:

• Penicillin skin testing and oral challenge were used to assess current penicillin allergy status.
• Children with a history of egg allergy received influenza vaccination.

Main Results:

• Penicillin testing identified a significant number of children who could safely receive penicillin and other beta-lactam antibiotics.
• Children with varying degrees of egg allergy tolerated influenza vaccination without adverse events.

Conclusions:

• Penicillin allergy testing is a valuable tool to de-label children and allow appropriate antibiotic use.
• Influenza vaccination is safe for children with egg allergy, including those with severe allergies, and reduces influenza-related complications.