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. 2022 May 16;94(9):4053–4055. doi: 10.1002/jmv.27846

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© 2022 Wiley Periodicals LLC.

This article is being made freely available through PubMed Central as part of the COVID-19 public health emergency response. It can be used for unrestricted research re-use and analysis in any form or by any means with acknowledgement of the original source, for the duration of the public health emergency.

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The graph presented the changing prevalence of SARS‐CoV‐2 variants in the UPMC health care system in Allegheny County, Pennsylvania. The numbers below the graph are the number of SARS‐CoV‐2 positive specimens tested in each time window.