Intramuscular Immunoglobulin for Measles Postexposure Prophylaxis

Area of Science:

• Public Health
• Immunology
• Pediatrics

Background:

• Intramuscular immunoglobulin (IMIG) is recommended for measles post-exposure prophylaxis in infants.
• Current weight-based dosing (0.5 ml/kg) necessitates large or multiple injections.
• Lack of clear administration guidelines poses challenges for healthcare providers.

Purpose of the Study:

• To describe the development and implementation of IMIG administration guidelines.
• To outline a coordinated approach for IMIG delivery post-measles exposure in infants.
• To establish a replicable model for public health agencies.

Main Methods:

• A real-world measles exposure event at a pediatric clinic in 2025 prompted guideline development.
• The Utah Department of Health and Human Services (DHHS) collaborated with local health departments and healthcare facilities.
• A practical administration plan was created and subsequently utilized.

Main Results:

• The Utah DHHS successfully coordinated IMIG administration following the pediatric clinic exposure.
• The developed plan provided a structured approach to managing large-volume IMIG doses.
• This strategy has been adopted for subsequent measles exposure events in Utah.

Conclusions:

• Effective coordination between public health agencies and healthcare facilities is crucial for IMIG administration.
• Standardized administration plans can overcome challenges associated with weight-based dosing of IMIG.
• The Utah DHHS model offers a successful framework for managing infant post-exposure prophylaxis for measles.