The two countries have set up the Newton Fund to focus on areas such as food security, the environment, and disease prevention and control.
Health Minister Aaron Motsoaledi has launched an HPV vaccine programme for grade four girls in all government schools.
A single shot of antiretroviral drugs has protected lab monkeys from HIV for weeks, according to two US trials.
A new drug, Tivicay, that could be vital in the struggle against HIV, might not be available to those who need it the most.
The new bird flu strain that has killed 36 people has proved resistant to Tamiflu for the first time, a development scientists find "concerning".