Researchers all over the world are seeking to develop an effective HIV-1 vaccine so as to prevent new cases of HIV-1 infection. Potential vaccines administered to humans in clinical trials were only found to provide partial protection against HIV in one out of six studies.
It was found that antibodies able to prevent cells from being infected with various variants of the virus played an important role in protection against HIV. This knowledge then helped researchers design and test HIV vaccines designed to potentiate these protective responses.