Massachusetts will now require health insurers in the state to cover vaccines recommended by the state's department of public health. This makes Massachusetts the first state to mandate insurance coverage for vaccines, even if federal requirements are rescinded. Currently, insurers must cover CDC-recommended vaccines without additional cost to patients. However, Health Secretary Robert F. Kennedy Jr. has signaled potential rollbacks to some federal vaccine recommendations. The directive has received support from major insurers like Blue Cross Blue Shield of Massachusetts and the Massachusetts Association of Health Plans. This move aligns with legislation filed by Governor Maura Healey that would empower the state's public health department to set independent vaccine standards. Massachusetts is joining other Democratic-led states in resisting potential changes to vaccine policy by federal officials. Governor Healey is also spearheading a regional collaboration among northeastern states. This initiative aims to establish shared guidelines for vaccines, disease surveillance, emergency preparedness, and public health labs.