It’s a Race for a Vaccine – a vaccine for HIV – it’s the glittering prize of drug R&D.
In 1992 the US Government promised a vaccine within two years.
Despite 25 years of research no one has found it.
But in the slums of Nairobi in Kenya they may have made a breakthrough which they hope will lead to the Holy Grail of vaccines.
Part of a 29 x 25-minute documentary series produced for the BBC. These films can be bought individually or as a series.