A boring video and the stigma of wearing a face mask may have led to a 90 percent vaccination rate for flu at New-York Presbyterian Hospital last year, doctors said Thursday. The rare success story is part of an encouraging trend – more people are being vaccinated against influenza. Record numbers of health care workers and children got flu vaccines last year – although numbers in pregnant women are still disappointing, the Centers for Disease Control and Prevention reports. "Last season more people were vaccinated in the United States than in previous seasons," said CDC's Dr. Anne Schuchat.