Recently we discovered a worm in an egg. A week prior, we found an egg with what appeared to be blood on the exterior of the shell. I believe we have roundworms in the flock now. Is it still safe to eat the eggs from the hens if we decide to treat with DE? Is it safe to eat the eggs if we do not treat? Is it possible that we as humans can contract roundworm from the poultry, and how would that affect us if it is possible?