19th World Congress on Disaster & Emergency Medicine
General information about South African Visas
Visitors’ visas are for international travellers (citizens of other countries) who have permanent residence outside South Africa and who wish to visit the country on a temporary basis for tourism or business purposes for a period of 90 days or less.  

Do I need a visa to visit South Africa?

Depending on your nationality, and the purpose and duration of your visit, you may not need a visa to visit South Africa.

Read more: http://www.southafrica.info/travel/documents/visas.htm#.VG0w54vF_Yg#ixzz3JYxBSin9