Supposedly to follow up on the effectiveness of their HIV vaccine.

Some have stated that an HIV vaccine may not be possible without significant theoretical advances.

The latest information about efforts in the search for an HIV vaccine.

But, so far, the search for an effective HIV vaccine hasn't been successful.

Given these daunting obstacles, why have so many continued in the long struggle to develop an HIV vaccine?

The achievement is a significant breakthrough towards the goal of an HIV vaccine.

The development of an HIV vaccine faces numerous scientific challenges.

In 2009, the institute again conducted trials for an HIV vaccine.

In 2007, the program is preparing to field-test an HIV vaccine.

It is hoped that further study of b12 may lead to an effective HIV vaccine.