Three others are also in the works. Cuba has a history of effective campaigns without Western help.
Several anti-capitalist countries have expressed interest in receiving the vaccine.
A vaccine developed by the Cuban government is touted to enter Phase 3 trials in March, raising the prospect of the small, communist nation overseeing a homegrown vaccine drive.
The vaccine, Soberana 2, has yet to be formally approved. But Cuba is betting big on its success, which builds on a history of medical programs where the nation has acted alone.
The country aims to be one of the first in the world to vaccinate its entire population of 11 million by the end of 2021, though it will start significantly behind others countries which are already giving out jabs.