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. 2021 Sep 21;21:1717. doi: 10.1186/s12889-021-11762-0

Fig. 2.

Fig. 2

Distribution of the testing prevalence per 100 residents (top) and the positive test prevalence per 100 tests (bottom) from March 2nd to April 6th, April 6th to May 12th, and from May 12th to July 6th, across quartiles of the COVID severity risk index