PARIS: Outbreaks of bird flu in mammals more than doubled across the world last year, raising the risk that the virus could potentially spread between humans, an international agency warned on Friday (May 23). Avian influenza has spread across the world like never before in the last few years, leading to the mass culling of poultry, sending egg prices soaring and causing the deaths of several people in contact with infected animals. While the overall risk of human infection remains low, bird