Corpse Poison

A maggot that has been genetically edited to form colonies in a siphonophore-like manner spreads rapidly using a virus as its egg-laying mechanism. This virus can infect the somatic cells of other species and induce cancer into embryos, which develop into this special kind of maggot "smart maggot". Intelligent maggots can control body movement by taking over the nervous system of an organism, and eventually completely replace the internal structure of the body to become a pure swarm biological individual.