| C19 | COVID-19 |
| CDC | Center for Disease Control and Prevention |
| EC | Economic Level |
| EL | Educational Level |
| HC | Health System Capacity |
| OLS | Ordinary Least Squares |
| PP | Political Preference |
| PS | Population Settings |
| USA | United States of America |
| USDA | United States Department of Agriculture |
| WHO | World Health Organization |
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