@文章{info:doi/10.2196/37466，作者=“牛，钱，刘，君宇，加藤，正谷，永井，Momoko，青山，Tomoki”，标题=“感染恐惧和充足的疫苗保留信息对日本快速COVID-19疫苗接种的影响:来自回顾性推特分析的证据”，期刊=“J Med Internet Res”，年=“2022”，月=“Jun”，日=“9”，卷=“24”，数=“6”，页=“e37466”，关键词=“COVID-19;疫苗犹豫;日本;社交媒体;背景:COVID-19大流行对全球公共卫生和社会经济产生了重大影响，因此通过接种COVID-19疫苗实现群体免疫是保护人民和恢复经济的重要因素。在所有国家中，日本在几个月内成为COVID-19疫苗接种率最高的国家之一，尽管日本的疫苗信心在世界范围内最低。目的:通过推特分析，我们试图找到日本快速接种COVID-19疫苗的原因，因为日本是全球疫苗置信度最低的国家。方法:我们从2021年2月1日至9月30日的时间轴内的大规模公共COVID-19推特聊天数据集中下载了与COVID-19相关的日本推文。每日接种病例数从日本首相办公室官方网站收集。预处理后，我们采用单记号和双记号分析，计算词频与日疫苗接种例数之间的交叉相关和Pearson相关系数(r)。 We then identified vaccine sentiments and emotions of tweets and used the topic modeling to look deeper into the dominant emotions. Results: We selected 190,697 vaccine-related tweets after filtering. Through n-gram token analysis, we discovered the top unigrams and bigrams over the whole period. In all the combinations of the top 6 unigrams, tweets with both keywords ``reserve'' and ``venue'' showed the largest correlation with daily vaccination cases (r=0.912; P<.001). On sentiment analysis, negative sentiment overwhelmed positive sentiment, and fear was the dominant emotion across the period. For the latent Dirichlet allocation model on tweets with fear emotion, the two topics were identified as ``infect'' and ``vaccine confidence.'' The expectation of the number of tweets generated from topic ``infect'' was larger than that generated from topic ``vaccine confidence.'' Conclusions: Our work indicates that awareness of the danger of COVID-19 might increase the willingness to get vaccinated. With a sufficient vaccine supply, effective delivery of vaccine reservation information may be an important factor for people to get vaccinated. We did not find evidence for increased vaccine confidence in Japan during the period of our study. We recommend policy makers to share accurate and prompt information about the infectious diseases and vaccination and to make efforts on smoother delivery of vaccine reservation information. ", issn="1438-8871", doi="10.2196/37466", url="//www.mybigtv.com/2022/6/e37466", url="https://doi.org/10.2196/37466", url="http://www.ncbi.nlm.nih.gov/pubmed/35649182" }