过敏疾病的发病率如何?

How about the incidence of allergic diseases?

  过敏疾病患者约占总人口1/3;

  Patients with allergic diseases accounted for about one-third of total population;

  发病率持续上升,30年间增加了4-5倍;

  The incidence is still increasing , more than 4-5 times during 30 years;

  80%的病人集中在城市,70%的过敏病人是儿童;

  80% patients are in the city, 70% patients are children;

  由发达国家向发展中国家流行,由大城市向小城市流行。

  From developed countries to developing countries,from big city to small city.


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