French-language television network TVA reported that the vaccine given to workers at the long-term-care facility last Sunday and Monday contained too much of the adjuvant, the substance added to the vaccine to stimulate a stronger immune response.
The centre’s director, Sylvie St-Hilaire, said the vaccine contained double the amount of adjuvant normally found in the vaccine.
“These kind of errors do happen. They are not common but they do happen every year, usually with errors in doses,” she said.
Dr. Terry-Nan Tannenbaum, chief of health protection at Montreal’s Public Health Department, said the H1N1 vaccine requires more steps to prepare it.
via CBC News – Montreal – 100 health workers repeat H1N1 shot.
