Try to get the pharmaceuticals of Puerto Rico to get involved in the production of the vaccines. They can ship to the Caribbean us territories and the mainland. Produce for the population in PR. It does not make sense to ship when they have the capacity. In fact, what could do is to add some temporary division areas for the mass production and hire additional people which there is a good supply of labor at lower cost than the USA.
Re-open those plants that closed previously creating jobs. Aster everyone is vaccinated in the USA, us tit as the link to sell vaccine to South America and other Caribbean countries.