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That's funny because the CDC even recognizes meningitis as being related to polio.

I didn't see any mention of that in the link you provided. Is there a specific part of that page that you can point me to?

its in there Non-polio enteroviruses

Causes
Non-polio enteroviruses are the most common cause of viral meningitis in the United States, especially from late spring to fall when these viruses spread most often. However, only a small number of people who get infected with enteroviruses will actually develop meningitis.

What's a enterovirus?

Enteroviruses are a group of viruses that include the polioviruses (viruses that cause polio)source

The active word here is"RELATED."
See https://en.m.wikipedia.org/wiki/Poliovirus

The key is 1955 the same virus. 1956 different.

its in there Non-polio enterovirusis

Ah - so it's "related to polio" in the sense that it's specifically not polio? Sure, they fall into the same group, but they are not the same. Their "relation" does not mean that they will have the same effects or the same treatment/vaccination.

You can have Zika or West Nile. You can have leukemia or testicular cancer. There are differences.

I'm not quite sure what your point was about the "relation" between polio and meningitis. Are you comparing the effectiveness of treatment?

the point is they were the same in 1955 and different 1956