More than half of large U.S. employers plan to scale back healthcare benefits next year as rising costs from weight-loss and specialty drugs squeeze budgets, according to a new survey released by consulting firm Mercer on Wednesday.

A coalition of pharmacy organizations, including the American Society of Health-System Pharmacists, has called for major U.S. health insurers to preserve existing vaccine coverage without increasing patient cost-sharing.

In letters sent to major insurers including UnitedHealthcare, Humana, Cigna, Kaiser Permanente and trade groups such as AHIP and Blue Cross Blue Shield Association, the organizations expressed concerns about the potential coverage changes following updates by the CDC’s Advisory Committee on Immunization Practices, according to a July 8 news release from the ASHP.