Recommended composition of influenza virus vaccines for use in the 2015 southern hemisphere influenza season

Overview

25 September 2014

It is recommended that trivalent vaccines for use in the 2015 influenza season (southern hemisphere winter) contain the following:

• an A/California/7/2009 (H1N1)pdm09-like virus;
• an A/Switzerland/9715293/2013 (H3N2)-like virus^a;
• a B/Phuket/3073/2013-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.

^aA/South Australia/55/2014, A/Norway/466/2014 and A/Stockholm/6/2014 are A/Switzerland/9715293/2013-like viruses