Correction to: Nature Medicine https://doi.org/10.1038/s41591-020-1132-9, published online 23 October 2020.

In the Supplementary Information (item 4.4.1, Data processing) of the version of this article initially published, the date range of data incorporated in the reported analyses (23 April 2020 to 26 June 2020) was incorrect. The correct date range is 23 April 2020 to 21 September 2020, as indicated in the main text of the manuscript. The paper and its conclusions are unaffected by this correction to the Supplementary Information. The Supplementary Information has been replaced online with an updated version.