Scientists in Russia have developed a new variant of the H5N1 bird flu vaccine, adapted to strains currently circulating globally. The announcement was made by the Russian Science Foundation, as quoted by the Xinhua news agency. According to the Russian institution, the vaccine is designed to provide a high level of protection against contemporary H5N1 viruses and, at the same time, be safe for both animals and humans. Representatives of the Russian Science Foundation stated in a statement