There have been 77 fully confirmed cases in Gauteng province in South Africa, four cases in Botswana and one in Hong Kong (which is directly linked to travel from South Africa).
However, there are clues the variant has spread even more widely.
This variant seems to give quirky results (known as an S-gene dropout) in the standard tests and that can be used to track the variant without doing a full genetic analysis.
That suggests 90% of cases in Gauteng may already be this variant and it "may already be present in most provinces" in South Africa.