Classification of viruses in medical microbiology

2021-08-25 07:02 PM

According to the current classification, human and vertebrate viruses are divided into 22 different families: 8 families of viruses containing DNA and 14 families of viruses containing RNA

Image. Simplifying virus classification: The Baltimore system

General perception

There are many ways to classify viruses. Currently, the classification of viruses is based on the following basic criteria:

The type of nucleic acids (DNA or RNA) and their structure (strand number).

The symmetry of the capsid.

With or without an envelope.

Viral genome structure.

The diameter and number of viral capsomers.

Enzymes.

Sensitive to ether.

Antigenicity.

Symptomatology.

Based on the above criteria to divide viruses into families (...viridae), genera (...viruses), species and virus types.

According to the current classification, human and vertebrate viruses are divided into 22 different families: 8 families of viruses containing DNA and 14 families of viruses containing RNA.

The families of viruses that contain DNA include:

Parvoviridae.

Iridoviridae.

Polyomaviridae.

Poxviridae.

Papillomaviridae.

Hepadnaviridae.

Adenoviridae.

Herpesviridae.         

Families of RNA viruses include:

Reoviridae.

Paramyxoviridae.

Picornaviridae.

Rhabdoviridae.

Astroviridae.

Filoviridae.

Caliciviridae.

Arenaviridae.

Togaviridae.

Coronaviridae.                               

Flaviviridae.

Bunyaviridae.                      

Orthomyxoviridae.

Retroviridae.