Virusul clarifierii nervurilor
socului - Sambucus vein clearing virus, SVCV, Nucleorhbdovirus, Rahbdoviridae, sinonim Elderberry vein
clearing virus, (Ref. Pop, 2009,
TVV, IV, 120). A fost raportat prima data la plante de Sambucus spp. , in Japonia (Kusonoki s.a., 1977, Phytopath. Soc. Japan
43, 125), plantele infectate natural manifestand clarifierea retelei
nervurilor. Virionii sunt in forma de bastonase scurte
sau de cartus, in sectiuni ultrafine avand o lungime
modala clara de 275 nm si 80 nm
in diametru.