man in white dress shirt standing beside white and orange plastic pack
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Published on Free to use under the Unsplash License

Here, a Centers for Disease Control and Prevention (CDC) scientist was reviewing patient sample results produced by the CDC's serologic test, which tests for SARS-CoV-2 antibodies. Serological testing is used to detect antibodies, which indicate past infection with the virus that causes COVID-19, and is important to the understanding of disease prevalence within a population.

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