NCIt related terms : Influenza Virus Type B; FLUBV; INFLUENZA B VIRUS WHOLE; Influenza B;
NCIt definition : A negative-strand linear single-strand RNA virus with an 8 segment genome. Virions
are enveloped and usually spherical or pleomorphic, 50-120 nm in diameter. Influenza
B viruses are usually found only in humans. Unlike influenza A viruses, these viruses
are not classified according to subtype.;
Alternative definition : CDISC: Any viral organism that can be assigned to the species Influenza B virus.;