In January 2021, Pfizer said it had finished enrolling 2,259 children aged between 12 and 15 years to study the vaccine's safety and efficacy.
To the horror of Pfizer's lawyers, the two agreed to begin work immediately, because , with no formal written legal agreement in place to govern the new collaboration.
Retrieved 29 December 2020.
It is a ", observer-blind, dose-finding, vaccine candidate-selection, and efficacy study in healthy individuals".
On 8 December 2020, Margaret "Maggie" Keenan, 90, from , became the first person to receive the vaccine outside of a clinical trial.
The site will be the third BioNTech facility in Europe that produces the vaccine, while Pfizer operates at least four production sites in the United States and Europe.