您能提供关于哮喘的综合概述吗，包括其定义以及关键统计数据，如美国的发病率、死亡率，以及对个体生活的更广泛影响？如果能够使用来自美国数据库的相关图表和图片来增进对这些方面的理解，将会非常有帮助。
Could you provide a comprehensive overview of asthma, including its definition and key statistics such as incidence rates, mortality rates, and the broader impact on individuals' lives in the United States? It would be particularly helpful if you could incorporate relevant charts and images from U.S. databases to enhance the understanding of these aspects.
Questions:
Can you provide a concise definition of asthma and its key characteristics?
What is the current incidence rate of asthma in the United States, and how has it trended over recent years?
Could you share data on the mortality rate associated with asthma in the United States, highlighting any noteworthy patterns or changes?
In what ways does asthma impact the daily lives of individuals, considering factors such as work, school attendance, and social activities?
To enhance understanding, are there specific charts or images from U.S. databases that illustrate the mentioned statistics and trends related to asthma in the country?最强最全资料下载链接
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