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  • Coronavirus disease (COVID-19) - World Health Organization (WHO)
    Coronavirus disease (COVID-19) is an infectious disease caused by the SARS-CoV-2 virus Most people infected with the virus will experience mild to moderate respiratory illness and recover without requiring special treatment
  • Coronavirus disease (COVID-19) - World Health Organization (WHO)
    COVID-19 is the disease caused by the SARS-CoV-2 coronavirus It usually spreads between people in close contact COVID-19 vaccines provide strong protection against severe illness and death Although a person can still get COVID-19 after vaccination, they are more likely to have mild or no symptoms
  • Coronavirus disease (COVID-19) - World Health Organization (WHO)
    Information on COVID-19, the infectious disease caused by the most recently discovered coronavirus
  • Coronavirus Disease (COVID-19) Situation Reports
    The Weekly Epidemiological Update provides an overview of the global, regional and country-level COVID-19 cases and deaths, highlighting key data and trends; as well as other pertinent epidemiological information concerning the COVID-19 pandemic
  • 如何通俗易懂地解释「协方差」与「相关系数」的概念？ - 知乎
    Cov(X,Y)=E[(X-\mu _{x})(Y-\mu _{y})] 公式简单翻译一下是：如果有X,Y两个变量，每个时刻的“X值与其均值之差”乘以“Y值与其均值之差”得到一个乘积，再对这每时刻的乘积求和并求出均值（其实是求“期望”，但就不引申太多新概念了，简单认为就是求均值了）。
  • Coronavirus disease (COVID-19) - World Health Organization (WHO)
    COVID-19 is the disease caused by a coronavirus called SARS-CoV-2 WHO first learned of this new virus on 31 December 2019, following a report of a cluster of cases of so-called viral pneumonia in Wuhan, People’s Republic of China
  • 冠状病毒病（COVID-19） - World Health Organization (WHO)
    自推出以来，covid-19疫苗为预防重症、住院和死亡提供了有效的保护，拯救了全世界数百万人的生命。尽管疫苗可以预防重症和死亡，但接种疫苗后仍有可能将sars-cov-2病毒传给他人。 世卫组织的应对 世界卫生组织是应对covid-19大流行的全球协调机构。
  • COVID-19 epidemiological update – 14 March 2025
    Overview During the four-week reporting period from 6 January to 2 February 2025, weekly SARS-CoV-2 PCR percent test positivity changed from 7 3% in the beginning week of the reporting period to 5 0% in the last week, as detected in integrated sentinel and systematic virological surveillance within the Global Influenza Surveillance and Response System (GISRS)
  • Risk evaluation for SARS-CoV-2 Variant Under Monitoring: LP. 8. 1
    LP 8 1 is currently one of two SARS-CoV-2 variants under monitoring (VUM) with increasing prevalence globally, the other being XEC Considering the available evidence, the additional public health risk posed by LP 8 1 is evaluated as low at the global level
  • WHO Coronavirus Network (CoViNet)
    The WHO Coronavirus Network (CoViNet) aims to bring together surveillance programs and reference laboratories to support enhanced epidemiological monitoring and laboratory (phenotypic and genotypic) assessment of SARS-CoV-2, MERS-CoV and novel coronaviruses of public health importance





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