California, Oregon, Washington and Hawaii announced the formation of a health alliance to guide residents on vaccines and immunizations because of what a joint statement called "the politicization of science" by the federal government.

Just one day after Oregon, Washington and California announced the creation of a new health alliance, the state of Hawaii is now joining the coalition.

U.S. states of California, Oregon and Washington said on Wednesday they have launched a new health alliance to provide unified vaccine recommendations amid growing tensions over federal immunization policies and public health directives.