Nyavirus

Genus "Nyavirus" (suggested)
Virus classification
Group:	Group V ((-)ssRNA)
Order:	Mononegavirales
Family:	Unassigned
Genus:	"Nyavirus" (suggested)
Species
Midway virus(suggested) Nyamanini virus (suggested)

The creation of a genus Nyavirus was suggested in 2009 for two viruses, Nyamanini virus (NYMV) and Midway virus (MIDWV). According to the suggestion, both viruses would be assigned to species of the same name (Nyamanini virus and Midway virus, respectively) that would constitute the genus.^[1]. No formal proposal for the creation of the genus or the two species has yet been forwarded to the International Committee on Taxonomy of Viruses (ICTV).

Virology

NYMV and MDWV are two antigenically related viruses that were first isolated in 1957 and 1966 respectively. NYMV has been isolated from cattle egrets (species Bubulcus ibis) and ticks (species Argas walkerae) in Egypt, India, Nigeria, South Africa, and Thailand. MDWV has been isolated from tick of the genus Ornithodoros collected in Midway, Kure and Manana islands and northern Honshu, Japan. Antibodies to this virus have been found in the black-tailed gulls (species Larus crassirostris) and black-crowned night herons (species Nycticorax nycticorax).

Their genomes are approximately 11.5 kilobases in length and contain 6 open reading frames. Of these, only two have been assigned a function: the putative nucleocapsid and RNA-dependent RNA polymerase. Their virons are enveloped, spherical, and measure 100-130 nm in diameter.

References

1. ^ Mihindukulasuriya KA, Nguyen NL, Wu G, Huang HV, da Rosa AP, Popov VL, Tesh RB, Wang D (2009) Nyamanini and Midway viruses define a novel taxon of RNA viruses in the Order Mononegavirales. J Virol 83(10):5109-5116