Polio type 2 and 3 were eradicated and overall we went from 400k cases of paralytic polio per year down to less than 1% of that.

You may want to check your numbers because polio type 2 and type 3 are both still around (in fact, cVDPV type 2 is very, very common). The GPEI website has the recent numbers, updated weekly (although with ~3 month lag).

400k to 4k is not 400k to 0. Eradication means 0. People don't get smallpox vaccines today because we hit 0. American children get ~4 doses of IPV still, despite what you are claiming as "eradication."

Reduced the number of cases by 99%*

That's amazing and I am very happy I live in a world where someone helped that many people, regardless of who you compare their accomplishments to.

Attributing that whole reduction to Gates alone is a ridiculous thing to do. He didn't even fund most of the project and the only thing he really brings to the table is money. This has been a multinational effort with literally millions of people for 3 decades. Gates mostly wrested control from them in the last decade.

If he manages to bring the project over the finish line, I will celebrate his achievement. At this point, signs point to failure of the GPEI being a near certainty. Unfortunately, we'll be back to 400k in about 10-15 years if we give up at this point.

You're conflating cVDPV with WPV. Despite both having a "type 2", they are not the same virus.

Calling a few hundred reported cases a year globally "very, very common" is... a stretch. You have better odds of getting struck by lightning.

I am not conflating cVDPV with WPV. The parent comment claimed type 2 and type 3 polio were gone, which is not true. WPV 3 and WPV 2 are gone, but type 2 and type 3 polio are both still around. If you get polio today (unlikely but possible), there's a pretty good chance it's cVDPV 2.

So you you're saying you knew the two types of polio were eradicated but inexplicably assumed the parent comment must have meant the vaccine-derived poliovirus was eradicated. Or you think these are the same virus because you saw "type 2" in the names of both.

I don't think these are the same thing. But when someone says that polio type 2 has been eradicated, that means the entire family of WPV, cVDPV, and VAPP. Not just WPV.

For all intents and purposes, yes, cVDPV is the same thing as WPV. There have actually been instances where cVDPVs have evolved into things that look quite a bit like WPV. Declaring victory over "type 2/3" because WPV is gone is meaningless when lots of people still get cVDPV and have exactly the same symptoms.