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Medical Definition of Pneumococcal pneumonia immunization
1. This vaccine, which prevents one of the most common and severe forms of pneumonia, is usually given only once in a lifetime, usually after the age of 55, to someone with ongoing lung problems (such as chronic obstructive pulmonary disease or asthma) or other chronic diseases (including those involving the heart and kidneys). This vaccination would rarely be given to children. (12 Dec 1998)