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Smallpox vaccination is the only currently effective mean to combat the threat of variola virus used as a bioterrorism agent, although it is responsible for a rare but serious complication, the postvaccinal encephalitis (PVE). Development of safer vaccines therefore is a high priority as the PVE physiopathology is not well understood to date. If vaccinia virus (VACV) is responsible for PVE by central...
As an initial step in the development of a second-generation smallpox vaccine derived from the Lister strain, to be prepared for a variola virus threat, diversity of the traditional vaccine was examined by characterizing a series of ten viral clones.In vitro and in vivo phenotypic studies showed that the biological behavior of the clones diverged from each other and in most cases diverged from the...
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