Viral classification

VIRAL CLASSIFICATION

BASED ON GENOME EXPRESSION
THIS SCHEME IS BASED ON THE CLASSIFICATION OF THE VIRUSES AS ORIGINALLY PROPOSED BY DAVID BALTIMORE IN BACTERIOLOGICAL REVIEWS, 35, 235 (1971).

INOVIRIDAE b +RNA +OR-DNA TYPE II: MICROVIRIDAE b TYPE VI: GEMINIVIRIDAE p RETROVIRIDAE a PARVOVIRIDAE a

HEPADNAVIRIDAE a*

MYOVIRIDAE b

PODOVIRIDAE b

+-DNA TYPE I: SIPHOVIRIDAE b

PAPILLOMAVIRIDAE a

POLYOMAVIRIDIAE a

ADENOVIRIDAE a

HERPESVIRIDAE a

POXVIRIDAE a

CAULIMOVIRIDAE p*

+RNA -RNA mRNA +-RNA

TYPE IV: TYPE III:

LEVIVIRIDAE b REOVIRIDAE a,p

PICORNAVIRIDAE a CYSTOVIRIDAE b

TOGAVIRIDAE a

FLAVIVIRIDAE a

CORONAVIRIDAE a

CALICIVIRIDAE a

BROMOVIRIDAE, etc. p

TOBAMOVIRUSES, etc. p

-RNA

TYPE V:

FILOVIRIDAE a

RHABDOVIRIDAE a,p

PARAMYXOVIRIDAE a

ORTHOMYXOVIRIDAE a

ARENAVIRIDAE a (ambisense)

BUNYAVIRIDAE a,p (partially ambisense)
* A newly defined group of viruses called TYPE VII, double-stranded DNA viruses that encode a reverse transcriptase and whose genomes pass through an RNA intermediate. This group has also been called the pararetroviruses.
a = animal virus, b = bacteriophage, p = plant virus