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Subjects
- Adolescent1
- Aged1
- COVID-19 -- mortality1
- COVID-19 -- prevention & control1
- COVID-19 Vaccines -- therapeutic use[remove]5
- Child1
- Drug Development1
- Hospitalization -- statistics & numerical data1
- Influenza Vaccines -- therapeutic use1
- Intention1
- Local Government1
- Medicare -- statistics & numerical data1
- Middle Aged1
- Outcome Assessment, Health Care1
- Pandemics -- prevention & control1
- Parents1
- Patient Acceptance of Health Care -- psychology1
- United States5
- Vaccination -- psychology1
- Vaccination -- statistics & numerical data2