West Coast Health Alliance
The West Coast Health Alliance (WCHA) is a coalition formed by an interstate compact among the states of California, Oregon, Hawaii, and Washington to coordinate public health guidelines separate from the Centers for Disease Control and Prevention (CDC), including safeguarding access to vaccines.
The plan was initially announced by the governors of California, Oregon, and Washington on their respective state websites on September 3, 2025. The next day, Hawaii announced that it would join. On September 23, Nevadan organizations representing thousands of healthcare clinicians and public health professionals strongly urged that Nevada join.
The WCHA criticized the dismantling of the CDC and announced plans to coordinate providing evidence-based immunization recommendations and public access information about the safety and efficacy of vaccines.