Thank you. It's an excellent question and is something that we're all placing a great deal of attention on right now.
In terms of the allocation framework, there is a hands-off independent scientific process led by the WHO to ensure that as soon as doses are made available through COVAX, they are allocated to countries on the basis, yes, of need and coverage, but also on the ability to use and other criteria, like vaccine dose preference. If a certain vaccine becomes available, but it's not what a country is looking for, it will go to someone else. That's part of the algorithm and the calculations I mentioned that go into each allocation round as new doses become available.
On the specific partners inside COVAX, Gavi is the organization that leads on the negotiation and determination of which vaccines to procure, but then UNICEF is the logistics agent that in general manages the delivery of vaccines from manufacturer to country.
In-country, the doses are traditionally handed over to the domestic health authority—the minister of health and her team, for example—and they then take responsibility for national rollout and administration. They have support from Gavi, from UNICEF and from the WHO in managing those national vaccines, but ultimately, the international community is here to support national authorities in managing their immunization campaigns.