Introduction; 1. Out of Africa; 2. The source; 3. The timing; 4. The cut hunter; 5. Societies in transition; 6. The oldest trade; 7. Injections and the transmission of viruses; 8. The legacies of colonial medicine I: French Equatorial Africa and Cameroun; 9. The legacies of colonial medicine II: the Belgian Congo; 10. The other human immunodeficiency viruses; 11. From the Congo to the Caribbean; 12. The blood trade; 13. The globalisation; 14. Assembling the puzzle; 15. Epilogue: lessons learned.