The state's medical quality board has accused a physician of giving outdated flu vaccine to 55 patients.
Dr. Gary McCallum used a batch of last year's vaccine, according to the state's Medical Quality Assurance Commission, which licenses physicians and other medical professionals. The board charged him Friday with unprofessional conduct.
McCallum told patients the vaccine, purchased last year in Canada, was good for the current flu season even though it expired in July, a state Health Department spokesman said.
"The people that received the vaccine aren't at any increased risk of side effects, but they may think they've been immunized when they . . . have not been immunized," said Regina Delahunt, director of the Whatcom County Health Department.