加拿大 Ontario, 20多人,一针打6倍计量 more than 20 people received an undiluted dose that day.
https://toronto.ctvnews.ca/ontario-clinic-accidentally-gives-people-six-doses-of-covid-19-vaccine-in-one-shot-1.5750028
美国 Iowa, 77 人
https://www.desmoinesregister.com/story/news/crime-and-courts/2021/04/21/iowa-prison-gives-overdoses-coronavirus-covid-19-vaccine-inmates-fort-madison-department-corrections/7328432002/
美国 Virginia, 112 人
https://www.cnbc.com/2021/11/11/virginia-pharmacy-incorrectly-administers-covid-vaccine-to-112-kids-officials-pull-remaining-doses.html
USA Massachusetts
https://www.wsls.com/news/local/2021/10/08/salem-teenager-claims-cvs-accidentally-gave-her-six-doses-of-the-covid-19-vaccine/
Australia Queensland
https://www.theguardian.com/australia-news/2021/feb/24/doctor-stood-down-after-two-brisbane-nursing-home-residents-given-excessive-dose-of-pfizer-vaccine
Singapore
https://www.straitstimes.com/singapore/singapore-national-eye-centre-worker-mistakenly-given-5-doses-of-covid-19-vaccine
Italy
https://www.livescience.com/woman-covid-19-vaccine-six-doses.html