The Connecticut Department of Social Services is mailing notices to approximately 60,000 households enrolled in the HUSKY health insurance program telling them that they must switch to a new managed care network by February 1. The change is staunchly opposed by advocates who say the new networks don't have enough doctors. The switch is happening because the state wants to end HUSKY's relationship with Anthem Blue Care, one of the managed care providers for the health plan for low-income children and adults. Anthem withdrew from bidding for HUSKY last March, but has continued to provide coverage. DSS officials have said Anthem's continued participation in the program was preventing doctors from joining the other HUSKY plans.