Britain is set to receive 800,000 doses of the Pfizer vaccine next week

Pfizer site in Puurs, Belgium, makes vaccine doses destined for the UK

Up to 1,000 doses at a time are placed into special freezer boxes

The boxes keep the vaccine at -70C for 10 days

Outer carton

Rechargeable dry ice

Insulation

Inner carton

Vaccine vials

Boxes are flown or ferried to the UK then sent to hubs and vaccination centres

Thermo-sensors and GPS trackers relay temperature and location data. At any point, the boxes can be recharged with dry ice

Delivered vaccines can be stored in medical fridges for up to five days at 2-8C

Vials go to eight mass vaccination sites, 50 hospitals, and more than 1,500 GP immunisation centres in England alone

Patients receive two doses of the vaccine, 21 days apart

Pfizer site in Puurs, Belgium, makes vaccine doses destined for the UK

Up to 1,000 doses at a time are placed into special freezer boxes

The boxes keep the vaccine at -70C for 10 days

Boxes are flown or ferried to the UK then sent to hubs and vaccination centres

Outer carton

Rechargeable dry ice

Insulation

Inner carton

Vaccine vials

1

2

3

7

6

5

4

Patients receive two doses of the vaccine, 21 days apart

Vials go to eight mass vaccination sites, 50 hospitals, and more than 1,500 GP immunisation centres in England alone

Delivered vaccines can be stored in medical fridges for up to five days at 2-8C

Thermo-sensors and GPS trackers relay temperature and location data. At any point, the boxes can be recharged with dry ice