Microbiologist, Dr. Keith Fowke has been involved in serious study and research to discover vaccination against HIV. His travel to Nairobi in the year 1988, to study some Kenyan sex-trade workers who managed to stay away from the deadly virus, led him to believe that those women were “naturally immune”.

"It's very different to study people who are exposed to HIV but are not infected", stated Fowke. He finds it extremely exhilarating to work on this issue because of the rapidly changing virus type. There are reports that even if a virus changes by two percent, the vaccine becomes ineffective.

People who had immune failures were not able to keep HIV away. But the cells in those sex workers were said to have been very cool, calm and composed, which could keep them away from such lethal infection despite of repeated contact.

This has resulted in encouraging Dr. Fowke to research on the main parts of the immune system which is providing defense.

"The biggest challenge in HIV vaccine design is that you are trying to hit a moving target", he said.

However, Fowke plans to keep his optimism high and continue the discovery with hopes to dig up further answers from the Kenya study.