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The impact of state- versus county-level mask mandates on economic activity during the COVID-19 pandemic
- Nathan Seegert,
- Maclean Gaulin,
- Nathorn Chaiyakunapruk,
- Francisco Navarro-Sanchez,
- Danielle Nguyen,
- Mu-Jeung Yang,
- Richard E. Nelson
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- Published: September 3, 2026
- https://doi.org/10.1371/journal.pone.0332243