One of the key messages during the height of the COVID-19 pandemic was that an individual’s level of exposure to SARS-CoV-2 had a strong influence on their risk for infection. And while that’s undoubtedly true to some extent—how can you contract a disease you’re not exposed to?—new data suggest that’s an overly simplistic notion. A study published by JAMA Internal Medicine reveals that one of the most-exposed groups in the United States also experienced lower …
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