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%!
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%。