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Subjects
- Travel-Related Illness[remove]6
- Government Regulation5
- United States5
- COVID-19 -- prevention & control3
- Air Travel2
- COVID-19 -- transmission2
- Disaster Planning -- legislation & jurisprudence2
- United States. Department of Health and Human Services2
- Airports -- legislation & jurisprudence1
- Communicable Diseases -- transmission1
- Motion Sickness -- etiology1
- Motion Sickness -- prevention & control1
- Pandemics -- legislation & jurisprudence1
- Personal Protective Equipment1
- Police -- statistics & numerical data1