To further understand how to combat COVID-19 vaccination hesitancy, we examined the effects of pro-vaccine expert consensus messaging on lay attitudes about vaccine safety and intention to get a COVID-19 vaccine. We surveyed 729 unvaccinated individuals from four countries in the early stages of the pandemic and 472 unvaccinated individuals from two countries after 2 years of the pandemic. We found belief of vaccine safety strongly correlated with intention to vaccinate in the first sample and less strongly in the second. We also found that consensus messaging improved attitudes toward vaccination even for participants who did not believe the vaccine is safe nor intended to get it. The persuasiveness of expert consensus was unaffected by exposing participants' lack of knowledge about vaccines. We conclude that highlighting expert consensus may be a way to increase support toward COVID-19 vaccination in those hesitant or skeptical. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

中文翻译：

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支持疫苗的专家共识信息说服了 COVID-19 疫苗怀疑论者。

为了进一步了解如何消除对 COVID-19 疫苗接种的犹豫不决，我们研究了支持疫苗的专家共识信息对公众对疫苗安全性的态度和接种 COVID-19 疫苗的意愿的影响。我们调查了大流行早期阶段来自四个国家的 729 名未接种疫苗的人，以及大流行两年后来自两个国家的 472 名未接种疫苗的人。我们发现，在第一个样本中，对疫苗安全性的信念与接种疫苗的意愿密切相关，而在第二个样本中，疫苗安全性的信念与接种意愿的相关性较低。我们还发现，即使对于那些不相信疫苗安全也不打算接种疫苗的参与者来说，共识信息也改善了他们对疫苗接种的态度。暴露参与者对疫苗知识的缺乏并没有影响专家共识的说服力。我们的结论是，强调专家共识可能是增加那些犹豫或持怀疑态度的人对 COVID-19 疫苗接种支持的一种方式。（PsycInfo 数据库记录 (c) 2023 APA，保留所有权利）。