However, if you are traveling from a country in the left two columns of the following table to a Southern African country in the right hand column, you are required to have a yellow fever vaccination and certificate. After immunization an International Certificate of Vaccination is issued and is valid 10 days after vaccination to meet entry and exit requirements for all countries. The Certificate is good for 10 years. You must take the certificate with you. Travelers who have a medical reason not to receive the yellow fever vaccine should obtain a medical waiver.
Dengue fever occurs occasionally in South Africa, Swaziland, and Zimbabwe.
The risk of infection is small for most travelers except during periods of epidemic transmission. There is no vaccine for dengue fever therefore the traveler should avoid mosquito bites. These mosquitoes bite mainly in the daytime. Other diseases spread by mosquitoes, sand flies, black flies, or other insects are prevalent, especially in rural areas. To reduce mosquito bites travelers should remain in well-screened areas, use mosquito nets, and wear clothes that cover most of the body.