Hi Jilly,
Sorry for the delay in coming back to you on this I wanted to make sure this was double checked. We had a similar query last year after the FCO updated their website - our ground agents replied with:
"We have actually checked on this, at the moment nothing officially has come out from South African government, the officials at the airport will still be asking clients going or coming from Zambia for the yellow fever certificate."
My colleague checked with the agents again yesterday and the response was:
"No changes, Yellow Fever Certificate is still required."
Kindest regards,
Julia