So what did Matt hncock mean by 'Mommoth logistical problems' ?
There are fears that Brexit could hold up the coronavirus vaccine in the United Kingdom, as the transition period comes to an end on December 31.
At present, there is an agreement with the European Union to keep the same rules in place until the end of the year, but the country needs a deal to keep many of the existing arrangements in place.
A deal that drops many of those agreements, or no deal at all, could cause significant disruption both for Europe and the UK.
Now there arereal fears this could have an impact on the coronavirus vaccine, which is expected at the end of this year, or start of next year after health secretary Matt Hancock insisted there would need to be "mammoth logistical operations" to transport the vaccine from the manufacture bases in Germany, Belgium and the US to the patient.