大流行
pandemic
COVID-19 has quickly spread to more than 150 countries and regions (地区). On March 11, WHO declared (宣布) it to be a pandemic. According to WHO, a pandemic is a worldwide epidemic that affects many countries. WHO Director-General Tedros Adhanom Ghebreyesus said the pandemic is “worldwide spread of a new disease and a call to action, not a reason to give up.”
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