However, no vaccine candidates had been announced by Nov 2007.

To address this, vaccine candidates have been designed to include proteins from both phases.

Several vaccine candidates are in varying phases of clinical trials.

Finally, and most importantly, there must arise a robust understanding of the immune response to potential vaccine candidates.

Some scientists are skeptical that the current vaccine candidate will be successful, a view they say is confirmed by the new pictures.

However, recent research has produced vaccine candidates with good results in experimental animals.

Genome-based approaches have been used to screen for novel vaccine candidates.

The process of evolutionary change is one of the key considerations necessary when considering potential vaccine candidates.

Several vaccine candidates for Shigella are in various stages of development.

It will steer each vaccine candidate through development and, if warranted, testing.