Viral vaccines contain inactivated viruses (alive but not capable of causing disease). Inactivated or killed viral vaccines contain viruses, that have lost their ability to duplicate and so as for it to evoke a response it contains more antigen than live vaccines.

Related Journals of Viral Vaccines
World Journal of Vaccines, Vaccines: Open Access Journal, Journal of Clinical and Cellular Immunology, Vaccine,Clinical and Vaccine Immunology