Truth: I clicked that expecting to read about a Cuban vaccine for liberalism (mostly wondering how that worked)

I really admire what Cuba has done in the last half century. They're a fairly resource poor island nation who were cut off suddenly from the trading partner who accounted for 85% of their trade. While they're constantly struggling financially, they have a huge rate of tertiary education, better female participation in the professional workforce than almost all nations, a decent happiness score and a now a better life expectancy than the richest nation in the world.

However, the creation of COVID vaccines was not difficult. COVID is not that dissimilar to a number of existing viruses which we already have vaccines for. The production of a simple vaccine is easy, but rounds of testing and approval take a long time. This is how come Cuba could create vaccines based on existing techniques with slight tweeks.

You may have just hit on part of the reason why Americans can now expect to live three years less than Cubans.