I will mark this off-topic now (which downweights it on the page) and we'll see how good or bad the other comments are, but at the time I'm typing this, it doesn't matter how good or bad the other comments are, or whether this thread even has any actual comments about Cuban vaccines, because the flamewar you started has filled it with low-rent internet flaming about (god help us) communism, Israel, and who knows what else. Such flamewars have nothing to do with the mandate of this site. They convince no one of anything, except how right they are and how aggrieved they are and therefore how justified they are in doing whatever they want to the other side.
https://hn.algolia.com/?dateRange=all&page=0&prefix=true&sor...
https://news.ycombinator.com/newsguidelines.html
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Edit: I'm getting the feeling that I may have left some people with the impression that I lack sympathy for Cuba or admiration for the achievements of Cuban researchers. Not at all. I think this is a great topic for HN to discuss. In order to be able to discuss it, we need to avoid flamewar and to avoid flamewar we need to avoid flamebait. That's all I mean, and I see that I put it in an excessively flamey way myself. Sorry!
If you don't see how the GP comment is flamebait, that might be because you're not aware of how large and geographically/politically/ideologically distributed this forum is. What to some readers reads as a bland factual statement is guaranteed to land with others as an outright provocation. That is obvious to me because I deal with these divisions in this forum every day. But I can see how it might not be obvious to others, and that's no doubt why my comment came across as excessive. Perhaps this was conditioned by spending the bulk of yesterday dealing with political flamewars on HN.