CHICAGO (Reuters) - The pneumonia vaccine might not prevent pneumonia, but it strengthens the body’s ability to ward off the worst of the illness that kills 10,000 Americans each year, researchers said on Monday.A study of more than 3,400 mostly elderly patients admitted to six Canadian hospitals with community-acquired pneumonia found those who had previously been vaccinated were 40 percent less likely to die or end up in the hospital’s intensive care unit.
