Learn more about what happens when AIDS sets in with information on common infections and pathogens including cytomegalovirus, toxoplasmosis and cryptosporidiosis, which can cause serious infections.
Dr Sindisiwe van Zyl qualified at the University of Pretoria before working for an HIV/AIDS NPO in Soweto for many years. She was named one of the Mail & Guardian's Top 200 Young South Africans in 2012.
Questions posted to HIV/Aids expert
questions answered by the expert