Oh,,and here is the section straight off of the SA Labour Guide.
“What is a medical certificate? It is a document issued and signed by someone who is certified to diagnose and treat patients and who is registered with a professional council. This may include dentists, psychologists, interns and nurses. Some sangomas or traditional healers do belong to a professional association, but as this is avoluntary association they are excluded as persons who may issue a medical certificate.”