Genus: Sicinivirus

Genus: Sicinivirus

Distinguishing features

The genus is distinguished on the basis of genetic characters.



No details are available on the morphology of virions.

Nucleic acid

Genome (Lau et al., 2014, Bullman et al., 2014): up to 9,874 nt (5′-UTR: up to 1,009 nt; ORF: up to 8,610; 3′-UTR: up to 308 nt). The 5′-UTR contains a predicted type II IRES. The location of the cre has not been identified. 

Genome organization and replication

Genome layout:


The deduced polyprotein has 2,855–2,870 amino acids. There is an L protein of unknown function. 1AB remains uncleaved. The 2A protein has an H-box/NC motif.


No virus has been isolated. Viral RNA was detected in faeces of chickens. Eight genetic types are distinguished by means of phylogenetic analysis.

Derivation of names

Sicinivirus: from Gaelic sicín, "chicken"

Species demarcation criteria

There is only a single species in the genus.

Member species

Exemplar isolate of the species
SpeciesVirus nameIsolateAccession numberRefSeq numberAvailable sequenceVirus Abbrev.
Sicinivirus Asicinivirus A1chicken/UCC001/EireKF741227NC_023861Complete coding genomeSiV-A1
Sicinivirus Asicinivirus A1ch/Pf-CHK1/HUN/2013KT880665Complete genomeSiV-A1
Sicinivirus Asicinivirus A2ch/JSY/China/2014KP779642Complete genomeSiV-A2
Sicinivirus Asicinivirus A3ch/RS/BR/2015/2KY069113Complete coding genomeSiV-A3
Sicinivirus Asicinivirus A4ch/100C/Hong Kong/2009KF979332Complete coding genomeSiV-A4
Sicinivirus Asicinivirus A5ch/RS/BR/2015/1KY069112Complete coding genomeSiV-A5
Sicinivirus Asicinivirus A6ch/RS/BR/2015/4RMG846481Complete coding genomeSiV-A6
Sicinivirus Asicinivirus A7ch/RS/BR/2015/7SMG846484Complete coding genomeSiV-A7
Sicinivirus Asicinivirus A8ch/RS/BR/2015/3RMG846482Complete coding genomeSiV-A8

Virus names, the choice of exemplar isolates, and virus abbreviations, are not official ICTV designations.

Related, unclassified viruses

Virus name

Accession number

Virus abbreviation

sicinivirus 10



Virus names and virus abbreviations are not official ICTV designations.
* partial genome