Time after onset of ILI symptoms and occurrence of the HA-222G variant or HA-222 quasispecies.

The specimens of the 48-year-old hospitalized man that were collected within 50 days after onset of ILI symptoms were not included in the analysis. Generally, each specimen represented one single time point.AThe community patients associated with pneumonia were included in the group of fatal and severe cases.本分析未纳入该48岁住院男性在流感样症状（Influenza-like Illness, ILI）发作后50天内采集的样本。通常情况下，每份样本对应单个采样时间点。合并肺炎的社区患者被纳入重症与死亡病例组。