Gov. Maura Healey says the state is launching two new working groups to address pressing healthcare concerns in Ayer and Dorchester — two communities where Steward Health Care closed hospitals last month. The announcement came as advocates and community health leaders warned there are indications that Dorchester residents are already getting sicker since Carney Hospital closed on Aug. 31. Healey's announcement said the two working groups will focus on "stabilizing and revitalizing" healthcare in the communities, with an emphasis on getting input from providers, community leaders, nearby health care facilities and the public.