Some types of germs living in food and water, so it can go into the body through the mouth from eating. Drink plenty of water to drink milk that is a disease or poisoning germs get mixed in. Sexually transmitted disease causing digestive tract. Thaifoi twist up the stools, diarrhea, cholera, dengue fever, little raksat etc.The contact and the spread of the disease, probably because the food is already in the disease or infection from the packing, transport, cooking. To serve, sell, etc. in addition, container, or the patient's outfit. Up the supplies in the diet may have an infection and can spread the germs to other people as well. When you use the same, or when the patient's disease which defecate into the ground and flies came right then to swarm around food. Germs can spread to others through the digestive tract.
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