EHR/PHR

HLN has released a new version of the open-source Immunization Calculation Engine (ICE) software, with key updates for COVID-19, mpox, and technical upgrades. This release adds support for evidence-based COVID-19 recommendations for the 2025-2026 season, in line with recommendations from the American Academy of Pediatrics and the American Academy of Family Physicians. Additionally, this release updates support for mpox vaccines and updates the ICE service to Java 21.

HLN reaffirms its commitment to evidence-based immunization recommendations in the Immunization Calculation Engine (ICE) open source software. With input from the ICE Advisory Group, ICE will align with guidance from professional medical societies like AAP, AAFP, ACOG, and ACP to ensure accurate, trusted vaccine evaluation and forecasting.

The Immunization Calculation Engine (ICE) Advisory Group convened on September 29, 2025, with over 30 experts across public health, healthcare, and health IT. Discussion centered on immunization decision support guidelines, including ACIP versus alternative evidence-based sources, and the operational and technical challenges created by a shifting immunization landscape.

HLN Consulting is launching the Immunization Calculation Engine (ICE) Advisory Group to ensure its open-source immunization decision support software keeps pace with evolving vaccine recommendations. The group brings together public health, IIS, EHR, and provider leaders to guide ICE’s clinical alignment, clarify complex recommendations, and share implementation feedback.

HLN has released ICE version 2.48.1 with key updates for influenza and RSV vaccines. This release adds support for new CVX codes, including the self/caregiver-administered influenza vaccine and the new clesrovimab monoclonal antibody product for prevention of infant RSV. Additionally, this release supports the expanded risk-based recommendation for adult RSV in alignment with the latest immunization recommendations.

Immunization guidelines are starting to diverge, with the CDC and AAP issuing conflicting COVID-19 recommendations for children. This blog explores what this split might mean for public health, clinical decision support, and the future of the open-source Immunization Calculation Engine (ICE).

With ACIP processes shifting and vaccine guidelines evolving, health care providers and public health need to determine what immunizations to recommend. This blog explores how collaboration on the open-source Immunization Calculation Engine (ICE) software can help ensure alignment across stakeholders in providing clear immunization decision support based on clinical best practices.

HLN released a new version of the Immunization Calculation Engine (ICE) software, bringing important updates and enhancements to ICE vaccine evaluation and forecasting.

On April 26, 2024, HLN released a new version of the Immunization Calculation Engine (ICE) supporting several vaccines. ICE is a state-of-the-art open source software system that provides clinical decision support for immunizations for use in Immunization Information Systems (IIS), Electronic Health Record (EHR), and Personal Health Record (PHR) Systems.