Here are the ProMED links for the earlier incidents people have mentioned. For what it's worth, I do not believe that any of these are smallpox. (Neither the fatality rate nor the transmission rate are what one would expect. And the symptoms are doubtful.) There is some speculation on the cause in the May 30, 2002, link below. Whether the "smallpox" claimed in the article posted in this thread is the same as the disease mentioned in any of the ProMED links is unknown.