www.niehs.nih.gov
Summarize this content to 100 words: <img width="100" src="https://www.niehs.nih.gov//news/factor/sites/niehs-factor/files/styles/large/public/2022/10/feature/3-feature-covid-19-research/thumb945518.jpg?itok=IL5GGZUH" /><br /><p>NIEHS COVID-19 serological surveillance study tracked the presence and rate of development of anti-SARS-CoV-2 antibodies in North Carolina.</p>
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