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Peanut allergy study finds babies should be retested. Here's what to know.

Peanut allergy study finds babies should be retested. Here's what to know.

Summary

An Australian study found that 34.8% of infants diagnosed with peanut allergy after a reaction and a positive test showed no allergic reaction during a supervised oral food challenge. Researchers say clinicians should consider such challenges to confirm a diagnosis, and experts warn families not to test peanut tolerance at home.

Key Facts

  • The study was conducted by the Murdoch Children's Research Institute and the National Allergy Centre of Excellence and published in The Journal of Allergy and Clinical Immunology.
  • The infants had recently reacted to peanuts and tested positive for peanut allergy.
  • During oral food challenges, clinicians gave infants gradually increasing amounts of peanut under medical supervision.
  • Researchers classified infants who had no adverse reaction during the challenge as peanut tolerant and removed their allergy label.
  • National Allergy Centre of Excellence Director Kirsten Perrett said clinical history and allergy tests alone did not accurately diagnose allergy in many cases.
  • Dr. Tania Elliott said 12% of the babies had anaphylaxis, a severe allergic reaction, during the challenges.
  • Elliott advised parents to discuss testing with an allergist and said oral food challenges should take place in a monitored medical setting.
  • The article says about one in 50 children in the United States has a peanut allergy.
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