Recommended composition of influenza virus vaccines for use in the 2014 southern hemisphere influenza season

26 September 2013

It is recommended that trivalent vaccines for use in the 2014 influenza season (southern hemisphere winter) contain the following:

  • an A/California/7/2009 (H1N1)pdm09-like virusa;
  • an A/Texas/50/2012 (H3N2)-like virusb*;
  • a B/Massachusetts/2/2012-like virus.

It is recommended that quadrivalent vaccines containing two influenza B viruses contain the above three viruses and a B/Brisbane/60/2008-like virus.

a A/Christchurch/16/2010 is an A/California/7/2009-like virus.
b A/Texas/50/2012 is an A(H3N2) virus that following adaptation to growth in eggs has maintained antigenic properties similar to the majority of recently circulating cell-propagated A(H3N2) viruses including A/Victoria/361/2011.

For more information

Candidate viruses for vaccine development and production for the sourthern hemisphere 2014