[Wikipedia-l] How rare is a rare disease?

[Pierre Abbat]

I added an article on Barth syndrome, which I read about in Reader's Digest, 
and which affects about 10 babies per year in the USA. There's also Asperger 
syndrome, which affects about 1 in 300. (Why the article calls it a 
"disorder" I don't know. I'm an aspie and I don't feel it's a disorder.) Why 
is Asperger listed in the list of rare diseases?

phma
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