Q.What is the ICTV, and how are viruses named?

[!TLDR]

The question asks what the ICTV is and how it names viruses.

[!ANSWER]

The ICTV (International Committee on Taxonomy of Viruses) is the body that sets the standard rules for classifying and naming viruses, using criteria such as the type of nucleic acid, capsid symmetry, presence of an envelope, and host range - since viruses do not fit the classification schemes used for cellular organisms.

Viruses cannot be classified using the same criteria used for bacteria, plants or animals, because they are not made of cells and do not share a common evolutionary ancestry with cellular life in any simple way. To provide a consistent, standard system regardless, the International Committee on Taxonomy of Viruses (ICTV) was established to define the rules by which viruses are identified, named and classified. Under ICTV conventions, viruses are grouped according to features such as the type of nucleic acid they carry (DNA or RNA, single- or double-stranded), the symmetry and shape of their protein capsid, whether or not they possess an outer lipid envelope, and the type of host organism they infect (for example, plant viruses, animal viruses or bacteriophages).

[!ANSWER]

The ICTV is the international body responsible for standardising virus classification and nomenclature, grouping viruses by nucleic-acid type, capsid symmetry, presence of an envelope, and host range.

• Confusing the ICTV with a body that names bacteria or other cellular organisms, when it is specifically dedicated to viruses.
• Naming only one classification criterion (e.g. nucleic acid type) instead of the several criteria the ICTV actually uses together.