Some reptile parasites are transmittable to humans and other pets, none of my snakes are allowed free run until I get a clean fecal from them, I try to check everybody once a year but generally once I get a clean fecal from them they stay clean its the dragons that need retreated a lot of the time and any snake eating live or fresh-killed is at a higher risk. If your worried about it just have your vet run a fecal to make sure the snake is clean.