在流感流行季节，通常每天有150人死于流感。
目的调查志贺菌在流行季节的主要血清型和耐药性。
Objective To investigate the serotypes and resistance of Shigellae in epidemic season.
在流感的常规流行季节冬季，老年人和那些患有慢性疾病的人被送往医院的最多。
During the regular winter flu season, elderly people and those with chronic health conditions are the most likely to be sent to a hospital.
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