A Chinese policeman wears a mask as he guards an access to a wholesale market where authorities are culling poultry after the new bird flu strain was detected there in pigeons being sold for meat in Shanghai on Friday April 5, 2013. China announced a sixth death from a new bird flu strain Friday, while authorities carried out the slaughter of all poultry at a Shanghai market where the virus was detected in pigeons being sold for meat. (AP Photo) CHINA OUT