导致猪流感患儿死亡原因是流感过后，因其他细菌感染而引起的并发症。
Some, however, had been healthy; they died of bacterial infections that set in after the flu.
许多卫生机构建议，对于一些主要的肺部感染细菌，如肺炎球菌，需至少对应一种疫苗，以对抗流感并发症的风险。
There is at least a vaccine against one major cause of bacterial lung infections, pneumococcus, recommended for those at risk of flu complications by many health agencies.
镰状细胞病患者血液含氧量低并且发生血管堵塞，可导致出现慢性和急性疼痛综合症、重度细菌感染和坏疽(组织坏死)。
Poor blood oxygen levels and blood vessel blockages in people with sickle-cell disease can lead to chronic acute pain syndromes, severe bacterial infections, and necrosis (tissue death).
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