Any of the infectious disease is caused by a specific stimulus, which is characteristic of this intestinal disease, pathogenesis and clinical picture, and even epidemiology. In addition to intestinal diseases have much in common. Thus, the reason for a large number of intestinal infections is a sick person or a carrier opreleennogo species of bacteria (dysentery, esherihiozy, typhoid fever), vector may be an animal (: write, salmonellosis). Timely detection of the pathogen environment is basically a bowel movement, sometimes with urine, with saliva, or during vomiting. Common is also a method of infection through the mouth (oral mechanism). Intestinal infection spreads by contact, at which the transfer agent is diverse. The factors of infection may make the objects in the environment contaminated by infected human feces (fecal contamination): various helper objects used in the care of an infected person, toys, books, linens, bedding, furniture, door handles, as well as food and drink. In the distribution of intestinal infections are also important insects. The highest incidence is observed in summer-autumn season. Intestinal infection observed a serious defeat of the gastrointestinal tract as well as the emergence of the general intoxication of the organism as a result of the influence of toxins which are produced by microbes in the body of a patient, or toxins that enter the gastrointestinal tract. Any signs of infection have oprelennymi. These symptoms may manifest as diarrhea, nausea, accompanied by vomiting, abdominal pain, bloating. Abdominal pain may be felt at first without any localization, but afterwards the pain concentrated in the epigastric region, around the navel or in the lower abdominal, mainly on the left side. According to its characteristics of pain usually similar to the fight. In the presence of poisoning may be chills, a significant increase in temperature, headache, lack of desire to eat, in severe cases, a loss of consciousness, [convulsions. With such serious diseases such as salmonellosis, typhoid fever culprit disease can fall into the general circulation and infiltrate the various organs and tissues, and cause them irreversible changes. Depending on the complexity of the flow of infectious intestinal diseases are divided into severe and moderate and simple forms. For severe form characterized by sharply symptoms of the disease, the duration of process and the probability of different problems. Some forms of the disease may be asymptomatic, or as a worn out forms. For the duration of infectious intestinal disease process can be divided into acute, protracted, and chronic. In the period of prolonged or chronic course likely to be increasing and relapse (relapse is the return of all signs of the disease, even after the visual recovery of the patient). The cause of recurrent symptoms is usually a reduction of security forces of the organism as a result of the accession of some other diseases (eg, OCR) or other pathologies.