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Table 1 Records of epidemic isolate in 8 winters and the compositions of influenza B in northern hemisphere seasonal influenza vaccines, 2010–2018

From: Debate on the compositions of influenza B in northern hemisphere seasonal influenza vaccines

Year

HA

NA

Vaccine strain

Lineage

Total

VCa

YMb

Unkc

Total

VC

YM

Unk

10/11

794

467

114

213

704

436

102

166

B/Brisbane/60/2008-like

VC

11/12

688

197

204

287

567

176

168

223

B/Brisbane/60/2008-like

VC

12/13

1208

234

709

265

699

171

458

70

B/Wisconsin/1/2010-like

YM

13/14*

584

115

245

224

503

112

219

172

B/Massachusetts/2/2012-like

YM

14/15*

1196

109

898

189

849

107

651

91

B/Massachusetts/2/2012-like

YM

15/16*

2427

1269

739

419

1948

1098

714

136

B/Phuket/3073/2013-like

YM

16/17*

1624

822

652

150

1406

746

599

61

B/Brisbane/60/2008-like

VC

17/18*

5575

722

4300

553

4269

623

3483

163

B/Brisbane/60/2008-like

VC

  1. aVC, influenza B/Victoria lineage viruses, b YM, influenza B/Yamagata viruses,
  2. cUnk, unknown lineage influenza B viruses
  3. * Only the recommended compositions of influenza B in trivalent influenza vaccines (TIVs) for northern hemisphere seasonal flu were listed
  4. Data updated on September 10, 2019