Family: Picornaviridae

Genus: Boosepivirus


Distinguishing features

The genus is distinguished on the basis of genetic characters. 



No details are available on the morphology of the virions. 

Nucleic acid

Genome (Nagai et al., 2015): 7,557–7,625 nt (5′-UTR: c. 550 nt; ORF: 6,882–7,023 nt; 3′-UTR: up to 134 nt). The location of the cre has not been identified. 

Genome organization and replication

Genome layout:


The deduced polyprotein is of 2,294–2,341 amino acids. 


No virus has been isolated. Viral RNA was detected in faecal samples of diarrhoeic cattle (Bos taurus) and in unspecified samples of sheep. Four types are distinguished my means of phylogenetic analysis (BooV-A1, BooV-B1, BooV-B2, BooV-C1). 

Derivation of names

Boosepivirus: from bovine, ovine sapelo-entero-like picornavirus

Species demarcation criteria

Members of a species of the genus Boosapivirus:

  • are less than 30% divergent in polyprotein aa sequence
  • are less than 40% divergent in P1 aa sequence
  • are less than 35% divergent in 2C+3CD aa sequence
  • share a common genome organization