Published on in Vol 6, No 6 (2022): June
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/37858, first published
.
![COVID-19 Variant Surveillance and Social Determinants in Central Massachusetts: Development Study COVID-19 Variant Surveillance and Social Determinants in Central Massachusetts: Development Study](https://asset.jmir.pub/assets/215e28835bc9cdb5174bd838b3749c13.png 480w,https://asset.jmir.pub/assets/215e28835bc9cdb5174bd838b3749c13.png 960w,https://asset.jmir.pub/assets/215e28835bc9cdb5174bd838b3749c13.png 1920w,https://asset.jmir.pub/assets/215e28835bc9cdb5174bd838b3749c13.png 2500w)
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