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Within three months, the virus had spread throughout the continent, as Lesotho, the last African sovereign state to have remained free of the virus, reported a case on 13 May 2020. [37] [38] By 26 May, it appeared that most African countries were experiencing community transmission, although testing capacity was limited. [39]
[21] [22] According to the World Health Organization, approximately 10 million new TB infections occur every year, and 1.5 million people die from it each year – making it the world's top infectious killer (before COVID-19 pandemic). [21] However, there is a lack of sources which describe major TB epidemics with definite time spans and death ...
See also Comparison of computer viruses. This is an alphabetical list of biological virus families and subfamilies; it includes those families and subfamilies listed by the ICTV 2023 report. [1] For a list of individual species, see List of virus species. For a list of virus genera, see List of virus genera.
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The world’s first confirmed coronavirus pandemic occurred in 2002, when SARS-CoV-1 was reported in China. It spread to more than two dozen countries in North and South America and Europe before ...
viruses portal; For viruses related articles needing an image or photograph, use {{Image requested|date=December 2024|viruses}} in the talk page, which adds the article to Category:Wikipedia requested images of viruses. If possible, please add request to an existing sub-category.
Mild illnesses in humans include some cases of the common cold (which is also caused by other viruses, predominantly rhinoviruses), [1] [2] while more lethal varieties can cause SARS, MERS and COVID-19. [3] [4] As of 2021, 45 species are registered as coronaviruses, [5] whilst 11 diseases have been identified, as listed below.
She first showed that, contrary to contemporary opinion, TMV virus particles were all of the same length. With Kenneth Holmes, she showed the virus's coat is composed of protein molecules arranged in helices. She designed and built a model of the virus to be exhibited at the 1958 World's Fair. She speculated that the virus is hollow, and ...