for a visiting hunter diseased or disease free has zero relevance.
diseased or disease free buffalo only has an implication on moving live buffalo accross a vetrinary line(the red line). on one side (east ) of the red line are disease buffalo, on the other side are disease free buffalo.
the disease buffalo carry four diseases, brucellosis, contagious abortion, foot and mouth, bovine tuberculosis (TB) i may stand to be corrected here.
they are only carriers and it doesnt affect them. they can pass these diseases on to domestic livestock that die from these diseases.
if you hunt a buffalo east of the red line, so near kruger park etc, the trophy, must be salted and dried and may not be moved for a period of 30 days i believe, then it can get moved to a taxidermist etc.
all buffalo in south africa are cape buffalo, only one species, there are some different bloodlines, so where they came from originally.
none of this(bloodline stuff) make any difference to me personally, i see a buffalo as a buffalo and they dont like people!!!
if you want more in depth info feel free to DM me.
regards