A woman - whose name hasn't been released - was one of several people at a California hospital to receive the COVID-19 vaccine despite not being a front-line worker, The Daily Beast reports.
The news comes after the European Union began rolling out vaccinations across member-states on 27 December.
Sold as Comirnaty, the two-dose vaccination is now the only coronavirus shot approved for use in the EU.
US Forces Korea begins vaccine distribution: United States Forces Korea started vaccinating military and civilian health care workers, first responders and the USFK command team at three of its medical facilities on Tuesday.
"There were doubts as to whether the cold chain was maintained at all times", said Christian Meissner, district administrator in the Bavarian town of Lichtenfels.
BioNTech pointed to the vaccine's package insert, which says that in the event of overdose, monitoring of vital functions and possible symptomatic treatment is recommended.
Asked about the delay during an interview with radio station Cadena Ser, Spain's Health Minister Salvador Illa said it was due to a problem "linked to the control of the temperature" of the shipments which was "apparently fixed".
Maria Asuncion Ojeda, a resident at Madrid's Ballesol Parque Almansa nursing home, was still delighted to be an early recipient of the Pfizer vaccine.
In Italy, some politicians said Germany appeared to be getting more than its fair share, at least during the highly symbolic initial rollout.
Data from the clinical trials of both the Pfizer and the Moderna vaccines show volunteers who received both doses of the vaccines had fewer asymptomatic infections than the placebo groups.
The US Army announced on Monday that it has started vaccinating service members deployed overseas belonging to the European Command against the novel coronavirus.
CEPI will initially contribute up to $5 million towards the cost of scaling up the vaccine manufacturing process, and will explore providing additional funding to Hyderabad-based Biological E's goal of potentially enabling the production of 100 million doses in 2021.
The Spanish ministry added that seven other countries were affected.