And, I must add, that IMHO the threat of smallpox is WAYYYY overblown. The US and Russia had the last remaining smallpox virus. I don't buy into the concept that rogue scientists or the Russian mafia may have got their hands on it and sold it to terrorist groups.
Yes, I've read the same thing. You can actually have the disease for up to 4 days, and be given the vaccination, which will then stop the disease apparently. As long as there's enough vaccine to go around, and the health authorities could get it distributed in time, it sounds like that would work.