Although pneumonia-vaccine protection isn't perfect, a major new analysis has found that even if vaccinated people get pneumonia, they're much less likely to experience respiratory failure, and they get out of the hospital faster. Anyone 65 and up -- as well as anyone with a chronic health problem or a weakened immune system -- should hold out an arm and say, "Ouch."

Together, flu and pneumonia are the seventh leading cause of death in the United States. Flu often opens the door to pneumonia by weakening the respiratory system. Although the pneumonia vaccine isn't totally effective -- about 20 percent of people still get into lung trouble -- new research shows that's no reason not to get a jab. It turns out that being previously vaccinated means shorter hospital stays, fewer complications, and a reduced risk of death from all causes. People 65 and older should get a pneumonia vaccination, as should others in high-risk groups, meaning anyone with chronic medical conditions such as pulmonary disease, diabetes, or a heart condition. The vaccine also is recommended for all children less than 23 months old.