Comment by simonask
Well, the problem is that what you are advocating is also that knowing Latin would be a prerequisite for studying medicine, which it isn't anywhere. That's the equivalent. Doctors learn a (very limited) Latin vocabulary as they study and work.
You are severely underestimate how far you can get without any real command of the English language. I agree that you can't become really good without it, just like you can't do haute cuisine without some French, but the English language is a huge and unnecessary barrier of entry that you would put in front of everyone in the world who isn't submerged in the language from an early age.
Imagine learning programming using only your high school Spanish. Good luck.
You don't need to become fluent in Greek and Latin, but if you want to be able to read your patent's diagnosis, you're absolutely going to need to know the terms used. The standard names are in those languages.
And frequently, there is no other name. There are a lot of diseases, and no language has names for all of them.