Yesterday I had an appointment with the Travel Assistance team (infectologia) at Hospital Aleman to check on the need of different vaccines for travel purposes and general advise. I also asked about the yellow fever vaccine. I was told that depending on age and the exact nature of the itinerary they would tell me wheather I need the yellow fever vaccine or not and wheather they could write a certificate for an exception. An appointment with "Asistencia al Viajero" would be ideal at least a month two before travelling. If necessary, the vaccine can be given at their vacunatorio.
With all my respect, do not trust them.
They do not have the vaccine, they tell you so but this is not true.
If you push the envelope a little bit, they sign you a certificate saying that you are allergic to eggs, that you are not, and with this is you have the exception to the vaccination.
I didn’t know about the yellow fever vaccination requirement for South Africa, so, I explain you my experience. I was going to loose my flight and they gave me a fake certificate of egg allergy is 5 seconds at HA.
However, I felt uncomfortable with this and I made the consultation with real experts from a public institution and they recommend me to do not travel without the vaccine as soon as there is no cure for yellow fever.
So, i lost the flight, i got the vaccine, I waited the 2 weeks plus one day and then I traveled to South Africa.