B/ Malaysia/ 2506/ 2004 varianta (B/ Malaysia/ 2506/ 2004) ……………………………………….
Cepa similar a B/ Malaysia/ 2506/ 2004 (B/ Malaysia/ 2506/ 2004) ………………………………………. * propagado en células Madin-Darby Canine Kidney (MDCK) ** hemaglutinina