― 以人为本的提高疫苗接种率的建议 (www.aha.org/system/files/media/file/2021/06/Human-Centered-Recommendations-For- Increasing-Vaccine-Uptake.pdf) ― 德博蒙特基金会：改变 COVID 对话 (https://debeaumont.org/changing-the-covid-conversation/) ― KFF COVID-19 疫苗监测：2021 年 6 月 (www.kff.org/coronavirus-covid-19/poll-finding/kff-covid-19-vaccine-monitor-june-2021/)