Oxford paper detailing how countries like Cuba (and other dictatorships) cheat on their global health metrics / infant mortality rates etc and fool people like Michael Moore into propagandizing them. In general, you can't believe metrics self reported by any authoritarian country on any topic.
https://academic.oup.com/heapol/article/33/6/755/5035051
https://academic.oup.com/heapol/article/33/6/755/5035051