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Subjects
- Bronchitis -- epidemiology1
- Bronchitis -- prevention & control1
- Cross Infection -- epidemiology1
- Cross Infection -- prevention & control1
- Forecasting1
- Health Personnel1
- Humans1
- Influenza Vaccines -- therapeutic use1
- Influenza, Human -- epidemiology1
- Long-Term Care1
- Nursing Homes[remove]1
- Pennsylvania1
- Pneumococcal Vaccines -- therapeutic use1
- Pneumonia -- epidemiology1
- Respiratory Tract Infections -- epidemiology1
- Respiratory Tract Infections -- prevention & control1
- United States1
- Vaccination -- statistics & numerical data1
- Vaccination -- trends1