Influenza vaccination of health-care personnel (HCP) is recommended by the Advisory Committee on Immunization Practices (ACIP). Vaccination of HCP can reduce morbidity and mortality from influenza and its potentially serious consequences among HCP, their family members, and their patients. To provide timely estimates of influenza vaccination coverage and related data among HCP for the 2011-12 influenza season, CDC conducted an Internet panel survey with 2,348 HCP during April 2-20, 2012. This report summarizes the results of that survey, which found that, overall, 66.9% of HCP reported having had an influenza vaccination for the 2011-12 season. By occupation, vaccination coverage was 85.6% among physicians, 77.9% among nurses, and 62.8% among all other HCP participating in the survey. Vaccination coverage was 76.9% among HCP working in hospitals, 67.7% among those in physician offices, and 52.4% among those in long-term care facilities (LTCFs). Among HCP working in hospitals that required influenza vaccination, coverage was 95.2%; among HCP in hospitals not requiring vaccination, coverage was 68.2%. Widespread implementation of comprehensive HCP influenza vaccination strategies is needed, particularly among those who are not physicians or nurses and who work in LTCFs, to increase HCP vaccination coverage and minimize the risk for medical-care-acquired influenza illnesses.