https://www.asere.com/cuba-presenta-en-mexico-el-interferon-alfa-2b-para-combatir-el-coronavirus/

https://en.wikipedia.org/wiki/Interferon_alfa-2b

I had a discussion with a friend of mine who stated China has had a lot of cases of Corona cured thanks to a new medicine from Cuba. However when I looked into it almost all sources were Cuban or in some way linked to biased sources (in favour of Cuba). It seemed to me when I looked into the whole issue that Interferon alfa 2b (which is what is stated) was created in Switzerland, but perhaps this specific one is Cuban made? Or perhaps it is just a copy of what already existed before.

I cannot help but be a bit biased against Cuban sources, anyone that has any knowledge about this care to share his or her ideas about this? Did Cuba create a miracle cure or are they just producing something that already existed for quite a while?