Content Themes and Influential. Voices Within Vaccine Opposition on Twitter, 2019
Content Themes and Influential. Voices Within Vaccine Opposition on Twitter, 2019
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DOI：
10.2105/ajph.2020.305901
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发表时间：
2020-10-01
影响因子：
12.7
通讯作者：
Smyser, Joe
中科院分区：
文献类型：
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作者：
Bonnevie, Erika;Goldbarg, Jaclyn;Smyser, Joe
目标.报告在Twitter上推广的疫苗反对和错误信息，突出Twitter帐户，推动对话。我们使用监督机器学习来编码所有Twitter帖子。我们首先通过使用扎根的理论方法手动识别代码和主题，然后通过算法将它们应用于完整的数据集。我们每月确定前50名作者，以确定与疫苗反对相关的有影响力的信息来源。数据收集期为2019年6月1日至12月1日，共收到356594份疫苗反对意见。共有129位Twitter作者在至少一个月内达到了顶级作者的资格。排名靠前的作者负责59.5%的疫苗反对信息。我们确定了10个谈话主题。主题在顶级作者和所有其他提到疫苗反对的作者中分布相似。顶级作者似乎是高度协调的主题内的错误信息的促进。公共卫生部门一直在努力应对疫苗错误信息。结果表明，疫苗错误信息的来源并不像最初出现的那样具有异质性或分布性。错误信息的上游来源是可以识别的，这可能有助于反信息传递和公共卫生监督。
Objectives. To report on vaccine opposition and misinformation promoted on Twitter, highlighting Twitter accounts that drive conversation.Methods. We used supervised machine learning to code all Twitter posts. We first identified codes and themes manually by using a grounded theoretical approach and then applied them to the full data set algorithmically. We identified the top 50 authors month-over-month to determine influential sources of information related to vaccine opposition.Results. The data collection period was June 1 to December 1, 2019, resulting in 356 594 mentions of vaccine opposition. A total of 129 Twitter authors met the qualification of a top author in at least 1 month. Top authors were responsible for 59.5% of vaccine-opposition messages. We identified 10 conversation themes. Themes were similarly distributed across top authors and all other authors mentioning vaccine opposition. Top authors appeared to be highly coordinated in their promotion of misinformation within themes.Conclusions. Public health has struggled to respond to vaccine misinformation. Results indicate that sources of vaccine misinformation are not as heterogeneous or distributed as it may first appear given the volume of messages. There are identifiable upstream sources of misinformation, which may aid in countermessaging and public health surveillance.