Influenza vaccination and sick leave practices and perceptions reported by health care workers in ambulatory care settings.

We examined annual influenza vaccination and sick leave practices and perceptions among 627 health care workers (HCWs) in ambulatory care settings in King County, Washington using a self-report questionnaire. Most medical practitioners (85%), but fewer other HCWs (nurses, nurse's aides, allied health professionals, administrative; 55%-64%) reported receiving an annual influenza vaccination; only 31% of HCWs reported routinely taking sick leave for influenza-like illness.