the root (no rank)
Viruses (domain)
ssRNA negative-strand viruses (subkingdom)
Mononegavirales (order)
Paramyxoviridae (family)
Morbillivirus (genus)
subacute sclerosing panencephalitis virus (species)
sclerosing panencephalitis virus (alias)
[hide inferior taxa]
defective subacute sclerosing panencephalitis virus (subspecies)