Actually both are correct. Talking about two different things.
From Helen
I'm really confused now: State dept website says "Negative COVID-19 Test Required: Any travelers to South Africa will need to present a negative COVID-19 test not older than 72 hours from the time of departure, or will be required to remain in mandatory quarantine at their own cost if they have not done a COVID-19 test.
Response
YES everyone must arrive with a negative covid test no older than 72 hours from departure. But probably everyone will get that Covid test! If you arrive WITHOUT a Negative Covid-19 test you can get tested (facility in the basement of the airport) and if you are negative then it is my understanding then you do NOT have to quarantine.
From Helen
While CNN reports:
All travelers must complete a screening form within 48 hours of their trip to produce on their device at the airport. On arrival, they must present a paper copy of a negative PCR test taken within 72 hours of arrival.
Response
YES that is all correct. They are talking about the Entry Form that has basic information and has health questions and must be completed on line no earlier than 48 hours before arrival. I am sending you that all filled out with all your personal details and all you have to do is copy the details to the on line form. Only thing not filled in ahead for you is your flight and seat numbers as they may change. This is a good idea as filling in these forms on arrival slows the entire arrival process down. Once completed they send you a code on your phone and you show the code and then can move on through the process without a time delay.
Also you must have a paper copy of your covid test showing it on your phone is not acceptable.
Those on my safaris do not need to worry, you will be receiving a lot of information with your final itineraries.
--------------------------------