Friday the 13th: The Jason Strain is a novel written by Christa Faust and was originally published in 2006.
Description[]
A controversial new reality TV show pits convicts against each other in a fight to the death, and Jason has been lured as the show's star attraction. However, an eccentric millionaire wants to get a sample of Jason's DNA to find the secret of his immortality, but it all goes horribly wrong. The "Jason Strain", a highly contagious virus that makes its victims invulnerable and immortal, but also fills them with Jason's rage and desire to kill, is unleashed upon the unsuspecting contestants!