In Photos: 'Devil's circle' for hay fever sufferers lurks in Tokyo skies
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A pollen corona is seen around the sun in Tokyo's Chiyoda Ward, on Feb. 22, 2021. (Mainichi/Koichiro Tezuka)
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A pollen corona is seen around the sun in Tokyo's Chiyoda Ward, on Feb. 22, 2021. (Mainichi/Koichiro Tezuka)
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A pollen corona is seen around the sun in Tokyo's Chiyoda Ward, on Feb. 22, 2021. (Mainichi/Koichiro Tezuka)
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A pollen corona is seen around the sun in Tokyo's Chiyoda Ward, on Feb. 22, 2021. (Mainichi/Koichiro Tezuka)
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A pollen corona is seen around the sun in Tokyo's Chiyoda Ward, on Feb. 22, 2021. (Mainichi/Koichiro Tezuka)