Apparently, South Africa, the rainbow state, has now legislated traditional knowledge rights.
At least one prominent South African IP academic, Professor Owen Dean, considers this a mistake, describing the initiative as Mad Hatter in Wonderland, See here.
South Africa was represented at the WIPO Traditional Knowledge conference in Israel last month. See Israel Hosts International Conference on Traditional Knowledge
We note that South Africa does not examine patents prior to issuing them, and only reviews their validity prior to enforcement in the courts. this anachronistic state of affairs has resulted in patents issuing for well-known inventions.