Gellerpox Infected
The Gellarpox Infected are a new Chaos subfaction allied to Nurgle introduced in Warhammer 40,000 8th edition. They are a recently invented creation of the Plague God's, resulting when a failure in the Gellar Field aboard an Imperial spaceship allows for the all-important field generator to be infected with a biomechanical virus that then proceeds to spread to the workers responsible for maintaining it. It psychically compels them to slowly weaken the generator's anti-Warp field until finally it reaches critical mass, whereupon the field generator transforms into a screaming half-machine half-flesh half-daemon womb and the infected turn into diseased cyborg mutants, who proceed to try and slaughter or infect the rest of the crew.