Severe pneumococcal pneumonia still occurs, even in young to middle aged persons (not just the very young and the very old) and has a mortality rate of 20%!

严重肺炎球菌性肺炎仍然发生，甚至在青年到中年人中(并非小儿和老年人)发生，死亡率为20%。

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Pneumococcal bacteria can cause pneumonia, meningitis, septicemia, otitis media and other diseases. There was high incidence of infants under 2 years of age and older people.

肺炎球菌可引起肺炎、脑膜炎、败血症、中耳炎等疾病，在2岁以下婴幼儿和老年人中发病率最高。

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Pneumonia, say the researchers, was the most common clinical disease associated with culture-confirmed invasive pneumococcal disease and this was mostly attributable to serotypes 1, 19A, 3, and 7F.

研究人员称，肺炎是临床疾病中最常见的与培养证实的侵袭性肺炎球菌相关，这最大程度上归因于血清型1，19A，3和7F。

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