So long as there isn't enough poo to cause extensive heating, or there is at least somewhere the worms can get away from the heat, worms actually love the poo, whether herbivore or carnivore. Biologically they really don't care so long as there isn't something like the Chinese contamination of
milk with melamine or other poisonous man made substances to deal with they digest everything in the poo. Worms naturally
feed on fecal matter regardless of the source. If you don't believe do a trial I have done with a few worms, 20-30, and moistened shredded paper mixed with dog food. In no time you will have excellent vermicompost and no trace of the original dog food will remain, the same is true after the food passes through the digestive tract of the dog. The combination of bacterial digestion and the enzymes in the guts of the worm destroy virtually all pathogenic organisms. Human poo is if anything worse and it is quite simple and straightforward to convert that to
humanure even without the beneficial action of worms. With worms a 2 year process takes a matter of months. You will want to mix in the "browns" of traditional composting, such as paper or
straw, but that is a normal part of vermicomposting.