Facts: - fields: epidemiology - birth date: 15 april 1956 - name: christopher dye - citizenship: british - image: chris dye.jpg - birth place: belfast , northern ireland Based on these bullet points, write a short biography describing the life of christopher dye .
A:
christopher dye frs , fmedsci is director of strategy in the office of the director general at the world health organization .from 2006 to 2009 he was the gresham professor of physic in the city of london , and is also a visiting professor of zoology at the university of oxford .