A successful response to the COVID-19 pandemic requires achieving high levels of vaccine uptake. We tested whether directly contrasting the high efficacy of COVID-19 vaccines with the lower efficacy of the annual flu vaccine would increase intentions to take a COVID-19 vaccine.

中文翻译：

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功效信息会影响接种 COVID-19 疫苗的意愿

成功应对 COVID-19 大流行需要实现高水平的疫苗接种。我们测试了直接对比 COVID-19 疫苗的高效与年度流感疫苗的低效是否会增加接种 COVID-19 疫苗的意愿。