Canada is barely a few weeks into the biggest mass immunization campaign in the nation’s history, and by now everyone has heard—or worse, lived—a flu shot horror story. “It’s been chaotic,” admits Dr. David Scheifele, director of the Vaccine Evaluation Centre in Vancouver, which is associated with the B.C. Children’s Hospital. His own experience is no exception. Recently, Scheifele ordered nurses at his hospital to administer the pandemic H1N1 vaccine to the highest priority health care workers, those in the emergency room, intensive care unit, and labour and delivery area. He knew there was a limited supply of shots, so nurses visited the targeted groups with a mobile cart. “We thought that was really smart. No advertising. This was a sensible way to interact with the people who needed the vaccines.”

