Successful administration of a 1-day imported fire ant rush immunotherapy protocol

Courtney A Judd1, Amy L Parker, Eric A Meier

  • 1Department of Allergy and Immunology, Wilford Hall Medical Center, Lackland Air Force Base, San Antonio, Texas, USA.

Insights

A novel 1-day rush immunotherapy (RIT) protocol using imported fire ant (IFA) whole-body extract (WBE) shows promise for young children. This approach may offer a safe and effective way to prevent anaphylaxis in IFA-allergic children.

Area of Science:

  • Allergy and Immunology
  • Pediatric Allergy
  • Immunotherapy

Background:

  • Young children with a history of systemic reactions to imported fire ant (IFA) stings face a high risk of re-sting due to limited avoidance skills.
  • Assessing effective prevention strategies for anaphylaxis in this vulnerable population is crucial.

Observation:

  • This case series evaluated a modified 1-day rush immunotherapy (RIT) protocol for imported fire ant (IFA) whole-body extract (WBE) in 3 patients aged 36 months or younger.
  • The protocol involved a rapid desensitization schedule adapted from a previously established 2-day protocol.

Findings:

  • All three pediatric patients demonstrated positive skin test reactions to IFA WBE prior to treatment.
  • No systemic reactions were observed in any of the patients during the 1-day RIT administration.
  • The study utilized a maintenance vial containing a 1:10 dilution of IFA WBE with human serum albumin diluent.

Implications:

  • This case series suggests that a 1-day IFA RIT protocol may be a safe and potentially effective option for preventing anaphylaxis in young children allergic to IFA.
  • Further research with larger patient cohorts is warranted to validate the safety and efficacy of this expedited immunotherapy approach.
Abstract

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