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. 2022 Sep 6;30(4):10099–10109. doi: 10.1007/s11356-022-22660-2

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© The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2022, Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

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Fig. 1 — New cases of COVID-19 (per 100,000 people) in Tokyo, Osaka, and five largest prefectures of Japan in July, August, and September 2021