Handout photo shows technician holding a master H1N1 virus sample for the pre-production of vaccine at laboratory in Dresden

A handout file photo shows a technician holding a master H1N1 virus sample, for the pre-production of a vaccine against pandemic influenza A (H1N1) virus at a laboratory of GlaxoSmithKline in Dresden June 16, 2009. REUTERS/GlaxoSmithKline/Handout