CHICAGO, Feb 15 (Reuters) - Avian flu has reached new corners of the globe and become endemic for the first time in some wild birds that transmit the virus to poultry, according to veterinarians and disease experts, who warn it is now a year-round problem. Wild birds have spread the disease farther and wider around the world than ever before, likely carrying record amounts of the virus, said Gregorio Torres, the head of the science department at the Paris-based World Organisation for Animal Health, an intergovernmental group and global authority on animal diseases. In Rhode Island, Eli Berkowitz, an egg producer and chief executive of Little Rhody Foods, sprayed the disinfectant Lysol on goose poop on a walkway of his farm in case it contained the virus