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The human virome is the total collection of viruses in and on the human body. [ 1 ][ 2 ][ 3 ] Viruses in the human body may infect both human cells and other microbes such as bacteria (as with bacteriophages). [ 4 ] Some viruses cause disease, while others may be asymptomatic. Certain viruses are also integrated into the human genome as ...
Credit: Neil Ranson (7 June 2011) Portal:Viruses/Selected picture/4. ΦX174 is a bacteriophage whose DNA genome size of 5386 nucleotides, among the smallest of DNA viruses, has led to it being the subject of pioneering research in molecular biology. Credit: Fdardel (21 March 2009) Portal:Viruses/Selected picture/5.
Viral disease. A viral disease (or viral infection) occurs when an organism's body is invaded by pathogenic viruses, and infectious virus particles (virions) attach to and enter susceptible cells. [1] Examples are the common cold, gastroenteritis and pneumonia. [2]
Viruses are by far the most abundant biological entities on Earth and they outnumber all the others put together. [ 89 ] They infect all types of cellular life including animals, plants, bacteria and fungi. [ 6 ]: 49 Different types of viruses can infect only a limited range of hosts and many are species-specific.
The mammalian immune system has evolved complex methods for addressing and adapting to foreign antigens. At the same time, viruses have co-evolved evasion machinery to address the many ways that host organisms attempt to eradicate them. DNA and RNA viruses use complex methods to evade immune cell detection through disruption of the Interferon ...
An analysis of all the publicly available viral genome sequences yielded a surprising result: humans give more viruses - about twice as many - to animals than they give to us. Of those, 79% ...
The first human virus to be identified was the yellow fever virus. [6] In 1881, Carlos Finlay (1833–1915), a Cuban physician, first conducted and published research that indicated that mosquitoes were carrying the cause of yellow fever, [ 7 ] a theory proved in 1900 by commission headed by Walter Reed (1851–1902).
Virus classification showing major ranks This is a list of biological virus families and subfamilies. 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 2020 report. [1] For a list of individual species, see List of ...