Vaccines against influenza: WHO position paper

This updated position paper, which replaces the corresponding 2005 document, is concerned with vaccines and vaccination against seasonal (epidemic) influenza.
However, brief reference is also made to pandemic influenza and pandemic influenza vaccines as evidence to support seasonal influenza vaccine usage in specific populations at risk of severe infection.
Recommendations on the use of influenza vaccines were discussed by SAGE at its meetings in November 2011 and April 2012. Evidence presented at these meetings can be accessed at http://www.who.int/immunization/sage/previous/en/index.html.