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. 2021 Apr 20;18(8):4376. doi: 10.3390/ijerph18084376

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© 2021 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 (https://creativecommons.org/licenses/by/4.0/).

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Number of infected individuals in both regions during 2nd blood collection ( $n_{I I}$ , August 2020) [25,26,27,28].