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Subjects
- Influenza, Human -- mortality[remove]4
- Humans3
- Influenza, Human -- prevention & control3
- United States3
- Communicable Disease Control -- organization & administration2
- Disease Outbreaks -- prevention & control2
- Influenza, Human -- epidemiology2
- Patient Acceptance of Health Care2
- Adult1
- Aged1
- Attitude to Health1
- Cost of Illness1
- Disease Outbreaks -- economics1
- Frail Elderly1
- Health Care Costs -- statistics & numerical data1
- Health Knowledge, Attitudes, Practice1
- Health Personnel -- psychology1
- Health Planning1
- Health Policy1
- Health Services Accessibility1