@Article{信息:doi 10.2196 / / jmir。3763，作者=“毛、陈、吴，辛寅、傅，小红、迪，孟阳、余，元元、元，金秋、杨，祖尧、唐金玲”，题目=“2013年初以来中国H7N9禽流感爆发的互联网流行病学调查”，期刊=“J Med Internet Res”，年=“2014”，月=“9”，日=“25”，卷=“16”，号=“9”，页=“e221”，关键词=“甲型流感病毒，H7N9亚型;互联网;大数据;疾病暴发;背景:2013年初，中国出现了一种新型禽流感H7N9。它很快成为一个公众关注的问题，并在互联网上广泛讨论的话题。相当数量的有关资料已通过各种来源在互联网上公开提供。目的:本研究旨在基于互联网上公开的数据描述H7N9在中国的爆发，并通过将我们的发现与进行良好的常规现场流行病学研究进行比较来验证我们的调查结果。方法:检索截至2014年2月10日中国政府和主要大众媒体网站上可公开获取的有关H7N9疫情的互联网数据。 Two researchers independently extracted, compared, and confirmed the information of each confirmed H7N9 case using a self-designed data extraction form. We summarized the epidemiological and clinical characteristics of confirmed H7N9 cases and compared them with those from the field study. Results: According to our data updated until February 10, 2014, 334 confirmed H7N9 cases were identified. The median age was 58 years and 67.0{\%} (219/327) were males. Cases were reported in 15 regions in China. Five family clusters were found. Of the 16.8{\%} (56/334) of the cases with relevant data, 69.6{\%} (39/56) reported a history of exposure to animals. Of the 1751 persons with a close contact with a confirmed case, 0.6{\%} (11/1751) of them developed respiratory symptoms during the 7-day surveillance period. In the 97.9{\%} (327/334) of the cases with relevant data, 21.7{\%} (71/327) died, 20.8{\%} (68/327) were discharged from a hospital, and 57.5{\%} (188/327) were of uncertain status. We compared our findings before February 10, 2014 and those before December 1, 2013 with those from the conventional field study, which had the latter cutoff date of ours in data collection. Our study showed most epidemiological and clinical characteristics were similar to those in the field study, except for case fatality (71/327, 21.7{\%} for our data before February 10; 45/138, 32.6{\%} for our data before December 1; 47/139, 33.8{\%} for the field study), time from illness onset to first medical care (4 days, 3 days, and 1 day), and time from illness onset to death (16.5 days, 17 days, and 21 days). Conclusions: Findings from our Internet-based investigation were similar to those from the conventional field study in most epidemiological and clinical aspects of the outbreak. Importantly, publicly available Internet data are open to any interested researchers and can thus greatly facilitate the investigation and control of such outbreaks. With improved efforts for Internet data provision, Internet-based investigation has a great potential to become a quick, economical, novel approach to investigating sudden issues of great public concern that involve a relatively small number of cases like this H7N9 outbreak. ", issn="1438-8871", doi="10.2196/jmir.3763", url="//www.mybigtv.com/2014/9/e221/", url="https://doi.org/10.2196/jmir.3763", url="http://www.ncbi.nlm.nih.gov/pubmed/25257217" }