It's exactly what was asked for. There's no profit margin, yet they were the first in the world to come up with a vaccine. Sounds like a good example of innovation to me?
I'm not sure what would be a perfectly comprehensive metric for health innovations by country. Drug patents might be sort of close[1], but maybe Cuba doesn't apply for patents on principled grounds. For Cuba, it would be helpful to know the ratio of the USA using drugs or other innovations developed in Cuba versus American ones used in Cuba. I hear that drug development can cost billions of dollars[2] so I'd be surprised if Cuba could afford it, but maybe they've done it. Anyone know of any new drugs invented in Cuba?
[1] e.g. https://www.americanactionforum.org/weekly-checkup/new-drug-...
[2] https://www.scientificamerican.com/article/cost-to-develop-n...