Initial symptoms include a high fever, usually with a temperature higher than 38oC, and other influenza-likesymptoms.
初期症状包括体温38度以上的高烧和其他流感样症状。
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Since 2008 Google has used these inquiries to track influenza-like illnesses (ILIs) -as symptoms not backed up by a definitive viral test are officially known-among its users around the world.