Any island that doesn't have air transport doesn't really need the vaccine (if transit take weeks, infections on ships burn out before they get there).
Realistically, every major population can be reached in 24 hours by modern transport, and the Pfizer 5000-dose transport package keeps the temperature for 5 days.
Realistically, every major population can be reached in 24 hours by modern transport, and the Pfizer 5000-dose transport package keeps the temperature for 5 days.