We investigated county-level variation in mRNA COVID-19 vaccine use among Medicare beneficiaries throughout the United States. There was greater use of Pfizer-BioNTech vaccines than Moderna vaccines in urban areas for first and booster doses.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11148879 | PMC |
http://dx.doi.org/10.1377/hlthaff.2023.00813 | DOI Listing |
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