Embassy states that passport must be: "...valid for thirty (30) more days after the intended return date from South Africa."
The World Health Organization reports (15 November 2018) no risk of yellow fever in South Africa. The government of South Africa requires proof of a yellow fever vaccination certificate for travellers arriving from or having transited through
countries with risk of yellow fever transmission.
- Timaticweb states that transit without visa is available when: "...transiting through Cape Town (CPT), Durban (DUR), Johannesburg (JNB) or Lanseria (HLA) with a confirmed onward ticket for a flight to a third country...must stay in the international transit area of the airport and have documents required for the next destination."
- Timaticweb also warns: "Warning: All transiting passengers are subject to a check by immigration. Passengers in transit must hold passports or other documents accepted to enter South Africa."
U.S. policy on dual nationality can be found
State Dept. warns: "South Africa strictly enforces entry and exit requirements and other immigration laws. Failure to observe these requirements may result in the traveler being denied entry, detained, deported, and/or deemed inadmissible to enter South Africa in the future...South Africa requires travelers to have two completely blank visa pages in their passports upon every arrival in South Africa. You will be denied entry and forced to return to your point of origin if you do not have two blank visa pages."