The solid black line in the figure below shows data from Vienna, which started requiring face masks on April 6, 2020. The dashed black line plots data from a nearby Salzburg, that did not implement a face mask requirement. Based on the data in the figure, estimate the impact of face masks on the cumulative number of Covid-19 cases in Vienna? Express your answer as a percent.

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The solid black line in the figure below shows data from Vienna, which started requiring face masks on April 6, 2020. The dashed black line plots data from a nearby Salzburg, that did not implement a face mask requirement.

  • Based on the data in the figure, estimate the impact of face masks on the cumulative number of Covid-19 cases in Vienna? Express your answer as a percent.
A
Introduction of face masks on April 6
March 27
April 6
April 16
April 26
007
001
09
Cumulative number Covid-19 cases
Transcribed Image Text:A Introduction of face masks on April 6 March 27 April 6 April 16 April 26 007 001 09 Cumulative number Covid-19 cases
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