Potential H7N9 bird flu vaccine shows promise

Two doses of a newly developed H7N9 bird flu vaccine seem to trigger a safe, effective immune response in humans. The results of the early-stage vaccine trial suggest that the preventive treatment should be developed further and that scientists are a step closer to being able to counter a potential H7N9 flu pandemic using a clinically tested vaccine, researchers argue April 30 in Science Translational Medicine.