A woman in Italy accidentally received six doses of the Pfizer-BioNTech COVID-19 vaccine all at once, according to news reports.
The 23-year-old woman did not experience any serious side effects from the vaccine overdose, CBS News reported.
The accident happened Sunday (May 9) at the Noa Hospital in Tuscany, Italy, according to CBS News. The nurse administering the vaccine mistakenly injected the woman with an entire vial of the Pfizer-BioNTech vaccine, which contains six doses.