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Virus classification is the process of naming viruses and placing them into a taxonomic system. Similar to the classification systems used for cellular organisms, virus classification is the subject of ongoing debate and proposals. This is mainly due to the pseudo-living nature of viruses, which is to say they are non-living particles with some chemical characteristics similar to those of life. As such, they do not fit neatly into the established biological classification system in place for cellular organisms.

Viruses are mainly classified by phenotypic characteristics, such as morphology, nucleic acid type, mode of replication, host organisms, and the type of disease they cause. Currently, two main schemes are used for the classification of viruses: the International Committee on Taxonomy of Viruses (ICTV) system and Baltimore classification system, which places viruses into one of seven groups. Accompanying this broad method of classification are specific naming conventions and further classification guidelines set out by the ICTV.

A catalog of all the world's viruses has been proposed; some related preliminary efforts have been accomplished.<ref name="NYT-20130905">{{#invoke:citation/CS1|citation |CitationClass=news }}</ref>


Virus classification sections
Intro  Virus species definition  ICTV classification  Structure-based virus classification  Holmes classification  LHT System of Virus Classification  Subviral agents  See also  Notes  External links  

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Virus classification is the process of naming viruses and placing them into a taxonomic system. Similar to the classification systems used for cellular organisms, virus classification is the subject of ongoing debate and proposals. This is mainly due to the pseudo-living nature of viruses, which is to say they are non-living particles with some chemical characteristics similar to those of life. As such, they do not fit neatly into the established biological classification system in place for cellular organisms.

Viruses are mainly classified by phenotypic characteristics, such as morphology, nucleic acid type, mode of replication, host organisms, and the type of disease they cause. Currently, two main schemes are used for the classification of viruses: the International Committee on Taxonomy of Viruses (ICTV) system and Baltimore classification system, which places viruses into one of seven groups. Accompanying this broad method of classification are specific naming conventions and further classification guidelines set out by the ICTV.

A catalog of all the world's viruses has been proposed; some related preliminary efforts have been accomplished.<ref name="NYT-20130905">{{#invoke:citation/CS1|citation |CitationClass=news }}</ref>


Virus classification sections
Intro  Virus species definition  ICTV classification  Structure-based virus classification  Holmes classification  LHT System of Virus Classification  Subviral agents  See also  Notes  External links  

PREVIOUS: IntroNEXT: Virus species definition
<<>>