A small malaria vaccine trial conducted in Mali has had promising results: The vaccine was entirely safe and induced a strong immune response -- a six-fold increase in malaria antibodies -- in 40 adults who received it. The vaccine is designed to prevent the malaria parasite from gaining entry to a host's red blood cells. A second study is now being conducted in 400 Malian children, ages 1 to 6. Could this particular vaccine bring an end to more than a million malaria deaths each year???