‘Military Precision’Distributing a vaccine in Africa would be “impossible" right now, Hughes said, given the lack of capacity combined with the size of the region, thin surface-transport infrastructure and the complexities of border crossings.Shipments will need to be planned with “almost military precision" and will require cool facilities at a network of staging posts where drugs can be stored between flights on the way to local dispersal.There are as many as 250 different vaccine programs under development, Hughes said, citing the World Health Organization.The U.S.
and other governments have invested billions of dollars to develop a shot at an accelerated pace, and more than two dozen vaccines are now being tested in volunteers less than.