Snakes are sometimes perceived as evil, but they are also perceived as medicine. If you look at an ambulance, there's the two snakes on the side of the ambulance. The caduceus, or the staff of Hermes, there's the two snakes going up it, which means that the venom can also be healing.
There is a social stigma attached to ambulance services, mostly because ambulances in India are often used as hearses for carrying the dead rather than transporting patients. We made presentations to graduating students at various healthcare institutes, trying to debunk this myth.
