The American airline United Airlines has started mass deliveries of Pfizer’s coronavirus vaccine to different countries, the Wall Street Journal reports, citing sources familiar with the situation.

Deliveries are being made before the US medical regulator, the FDA, approves the vaccine, and a decision on this issue is expected by mid-December.

At the same time, US President Donald Trump said that the vaccine would be available by the beginning of next month. First, medical workers and other people belonging to risk groups will be vaccinated.

The plan to distribute the vaccine involves warehouses in Michigan, Belgium, and warehouses in Wisconsin and Germany.

As told to the publication in the American FAA aviation regulator, work is currently underway on the vaccine’s safe transportation.

United Airlines allowed five times more dry ice than usual to be carried on-demand to support ultra-low storage temperatures. The vaccines themselves are transported in briefcase-sized containers.

Hundreds of flights a day are already being operated, and some passenger and cargo airlines are also preparing to deliver the vaccine, the WSJ adds.