A Canadian biotech company could be about to spark what the head of the WHO’s influenza program says may be a mini-revolution in the manufacture of flu vaccine. Microbix Biosystems Inc., a Toronto company, has developed a mysterious “process” it claims produces a four-fold increase in the yield of influenza virus incubated in eggs. It recently announced it’s in negotiations with a major player in the flu vaccine world for an exclusive licence to the process.