A new vaccine that appears to stop in its tracks is adding to optimism that this could be the beginning of the end for the disease. A study of the jab in mice found that not only did the shot clear harmful amyloid plaque from the brain, it also prevented the behavioral changes that normally plague Alzheimer's sufferers.It comes after a year in which , ending decades of failed trials and false hope. However, those treatments only give patients a few extra months of healthy life.
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