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Most Australians reporting penicillin allergy not truly allergic

Australian immunologists update guidelines after finding up to 90% of reported penicillin allergies are not genuine.

At a glance

  • Up to 90% of Australians reporting penicillin allergy do not have a genuine allergy
  • Penicillin was previously thought to affect 10% of Australians, approximately 2.8 million people
  • Updated guidelines aim to reduce hospital stays and tackle antimicrobial resistance

Australia's peak body for immunologists has revised its guidelines after evidence showed that the majority of people reporting penicillin allergies do not actually have them. Penicillin, one of the most widely prescribed antibiotics in Australia, was previously thought to cause allergies in about 10% of the population.

The guideline change aims to reduce unnecessary hospital stays and help address antimicrobial resistance by enabling more patients to safely use penicillin-based treatments.

Why it matters

Misdiagnosed allergies can limit antibiotic options and contribute to antimicrobial resistance, a major public health concern.

Original reporting

This brief was written with AI assistance from the reports listed above and checked against our editorial policy. Spotted an error? Request a correction.