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The strains in this genus form a distinct clade within the family Caliciviridae (Figure 4.Caliciviridae).
See discussion under family description.
The genome of nacovirus is 7.6 kb and contains two ORFs (ORF1 and ORF2). ORF1 encodes a polyprotein with a calculated molecular weight of 250.6 kDa and a VP1 protein with a calculated molecular weight of 61.6 kDa. ORF2 encodes a polypeptide with a calculated molecular weight of 21.5 kDa.
Nacoviruses are novel avian caliciviruses that were detected in intestinal contents of turkeys, chickens and geese from the United States, Germany, Netherlands and China (Wolf et al., 2012, Day et al., 2010, Liao et al., 2014). In turkeys, weight loss, enteritis and liver enlargements with foci of intrahepatic necrosis and inflammation was reported.
Not defined as there is only one species in the genus.
goose calicivirus strain N
chicken calicivirus F10026n
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