In the article beginning on page 925 in the June 2021 issue, the second point in the “What This Article Tells Us That Is New” section should read “... (1.0 infections per 10,000 injections)” rather than “... (1.0 infections per 100,000 injections)” as originally published.

We regret this error. The online version and PDF of the article have been corrected.


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