Related how?

Biota (Life)
Virus (Viruses)
Riboviria
Orthornavirae
Pisuviricota
Pisoniviricetes
Picornavirales
Caliciviridae (Swine vesicular exanthema virus & relatives)
Norovirus (Winter vomiting bug)

Norwalk virus (562082)

Children (1 direct children, 1 direct and indirect children):

Norovirus gii.4 sydney