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  1. 流行性感冒
    流行性感冒传染性疾病
    概览症状病因诊断治疗临床试验风险因素流行
  2. Copilot 答案
    Mayo Clinic
    https://www.mayoclinic.org › diseases-conditions › flu › symptoms-causes

    Influenza (flu) - Symptoms and causes - Mayo Clinic

    • Learn about the common signs and symptoms of the flu, such as fever, cough, headache and muscle aches, and how to prevent and treat it. Find out who is at high risk of complications and when to see a doctor.… 展开

    Overview

    Flu, also called influenza, is an infection of the nose, throat and lungs, which are part of the respiratory system. The flu is caused by a virus. Influenza viruses are different from the "stomac… 展开

    Mayo Clinic
    Symptoms

    The viruses that cause flu spread at high levels during certain times of the year in the Northern … 展开

    Mayo Clinic
    Causes

    Influenza is caused by viruses. These viruses travel through the air in droplets when someone with the infection coughs, sneezes or talks. You can inhale the droplets directly. … 展开

    Mayo Clinic
    Complications

    If you're young and healthy, the flu usually isn't serious. Although you may feel awful while you have it, the flu usually goes away in a week or two with no lasting effects. But people at high ri… 展开

    Mayo Clinic
    Signs and Symptoms of Flu | Influenza (Flu) | CDC
    CDC
    Flu (Influenza): Causes, Symptoms, Types & Treatment
    Cleveland Clinic