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A health official from Yongsan district, wearing personal protective equipment (PPE), sprays anti-septic solution at outside stores in an alley of Itaewon district to prevent the spread of coronavirus (COVID-19) ahead of Halloween on October 29, 2021 in Seoul, South Korea. Calls for vigilance have grown as many communities are expected to celebrate Halloween over the rest of this week. (Photo by Chung Sung-Jun/Getty Images)
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