1. Africa Centre for Health and Population Studies Datasets Vaccinations http://www.africacentre.ac.za/Portals/0/Datasets/Core/Vaccinations.pdf
2. Africa Centre for Health and Population Studies Research programmes Infectious Diseases Epidemiology http://www.africacentre.ac.za/Default.aspx?tab
3. Aggleton P Parker R 2002 World AIDS campaign 2002-2003 - a conceptual framework and basis for action: HIV/AIDS stigma and discrimination http://pdf.dec.org/pdf_docs/PNACP852.pdf
4. Health workers and vaccination coverage in developing countries: an econometric analysis;Anand;Lancet,2007
5. Economic benefits and costs associated with target vaccinations;Armstrong;Journal of Managed Care Pharmacy,2007