A little more than a decade after the explosion of research into recombinant live-attenuated or replication-deficient viruses as vaccine platforms, many viral vector-based vaccines have been licensed for animals. Progress has been slower for humans but 2011 will see the licensure of the first viral-vectored vaccine for humans, against Japanese Encephalitis. In addition a vaccine with a viral-vectored component showed efficacy against HIV infection in humans. Viral-based vaccines have an excellent safety profile but must deal with the potential problem of pre-existing anti-vector immunity. Recent successes reflect diverse improvements such as development of new adenovirus serotypes and better prime-boost approaches, suggesting that many viral vectors are approaching their final years as vaccine 'candidates' rather than vaccines.

Original publication

DOI

10.1016/j.coi.2011.03.006

Type

Journal

Curr Opin Immunol

Publication Date

06/2011

Volume

23

Pages

377 - 382

Keywords

Animals, Clinical Trials as Topic, Genetic Vectors, Humans, Treatment Outcome, Viral Vaccines, Virus Diseases