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astir    
a.
ad. 起床的,活动的,行动的;轰动,骚动

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  • Timeline of the COVID-19 pandemic - Wikipedia
    The timeline of the COVID-19 pandemic lists the articles containing the chronology and epidemiology of SARS-CoV-2 The first human cases of COVID-19 occurred in Wuhan, People's Republic of China, around 17 November 2019
  • CDC Museum COVID-19 Timeline | David J. Sencer CDC Museum | CDC
    A study is published in Nature showing that even a mild case of COVID-19 appears to increase the risk of heart problems for one year after infection The study’s authors suggest that COVID-19 might be as much of a risk factor for heart disease as high blood pressure, diabetes, or smoking
  • History of COVID-19: Outbreaks and vaccine timeline - Mayo Clinic
    2020 COVID-19 and related vaccine development and research History of COVID-19: Outbreaks and vaccine timeline Find out more about the COVID-19 pandemic, COVID-19 tests, COVID-19 treatments, mRNA research and COVID-19 vaccines
  • How an outbreak became a pandemic: a chronological analysis . . .
    The COVID-19 pandemic is the result of the rapid international spread of SARS-CoV-2, a coronavirus that causes COVID-19 disease As of Oct 22, 2021, more than 242·3 million infections and 4·9 million deaths have been documented, making it one of the most extensive pandemics in history, 1
  • The origins of COVID‐19 pandemic: A brief overview - PMC
    The novel coronavirus disease (COVID‐19) outbreak that emerged at the end of 2019 has now swept the world for more than 2 years, causing immeasurable damage to the lives and economies of the world It has drawn so much attention to discovering how
  • History of the COVID-19 pandemic: Origin, explosion . . .
    When, years from now, the history of the COVID-19 will be written, three distinct phases will have to be distinguished: the origins, the localized explosion, and the final worldwide spreading
  • COVID’s origins: what we do and don’t know - Nature
    COMMENT 24 February 2026 COVID’s origins: what we do and don’t know Researchers summarize key insights from the world’s first comprehensive investigation into how a pandemic started
  • Year 3 of COVID-19: Harsh Truths, Brutal Realities, and . . .
    Brutal Realities of COVID-19 in the United States An examination of the current average daily new COVID-19 cases reveals that the unvaccinated have about 3 times the rate of acquiring new cases compared with the fully vaccinated in addition to a 6-fold higher risk of death





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