Five genetic tweaks made a deadly strain of bird flu that can infect humans spread more easily, according to a study that the U.S. government had first sought to censor on concerns it could be used by bioterrorists.
Office of Strategic Communication
Five genetic tweaks made a deadly strain of bird flu that can infect humans spread more easily, according to a study that the U.S. government had first sought to censor on concerns it could be used by bioterrorists.