The distribution of 200 million doses of the coronavirus vaccine developed by Pfizer and BioNTech is "scheduled to be completed by September 2021," a European Commission spokesman told CNN Monday. 

“The Commission and the Member States are working to activate the additional 100 million doses,” the spokesman added.

In November, the European Commission concluded a contract with Pfizer for 300 million doses. The first batches were delivered to countries in Europe on Dec. 26, ahead of the first day of vaccinations in the European Union on Sunday Dec. 27.

The deliveries of this vaccine “will continue in December and on a steady weekly basis during the following months,” the spokesman told CNN.

“The distribution will start progressively. Vaccines will start to be given to priority groups identified by Member States,” he continued, noting that vaccine supplies are expected to increase over time with the anticipated regulatory approval of additional vaccine candidates.

“For most contracts concluded, the majority of delivery is foreseen to be completed in 2021. Under some contracts, first deliveries are expected to already start in the first quarter of 2021,” the spokesman added.

In addition to its contract with Pfizer-BioNTech, the European Commission has also established contracts with:

AstraZeneca (400 million doses)
Sanofi-GSK (300 million doses)
Johnson & Johnson (400 million doses)
CureVac (405 million doses)
Moderna (160 million doses)

The above information is according to the Commission’s website.