We have to make sure that we give the person the same vaccine for their second dose that they got for their first dose.

Jinlene Chan

Throughout -- from every single point the vaccine has to traverse -- we have to maintain it at that temperature. Otherwise, there is a risk of some degradation and the vaccine possibly becoming less effective, we need to make sure that there is some capability to store it appropriately until it is ready to use.

With mass vaccination clinics, it involves bringing large groups of people into a site and vaccinating as many people as possible, how do we do that in a way that reduces the risk of transmitting the very disease that we trying to vaccinate against ?