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. 2020 Feb 19;9(2):571. doi: 10.3390/jcm9020571

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Heatmap of the outbreak risks as functions of $θ$ and $R_{loc}$ , when C = 200,000. The arrows show the directions corresponding to the largest reductions in the risk.