As Lowe notes in the blog piece, statements of about 85% protection from the smallpox vaccine are going around.

I haven't seen anything in particular about the protection resulting from a full-blown, non-attenuated infection, but as I understand it from discussions apropos another pathogen of fame lately, the rule of thumb is more comprehensive and lasting immunity from going through the disease as compared to vaccinations.

That is, I believe you ought to be in great shape compared to most of the world population.

What was it like? If it can be meaningfully described...