In travelers, the bacterial flora usually present in the intestinal tract can undergo rapid change, coming into contact with "unknown" germs that attempt to colonize it. The first cause of the traveler 's diarrhea, in fact, is represented by pathogenic agents such as bacteria, viruses and parasites, capable of overcoming the barriers of defense and infecting our organism. However, other factors can increase the chance of experiencing traveller's diarrhea.
The traveler's diarrhea can occur due to the change in climate and temperature, the stress of travel and the different diet. Usually, it is more likely to contract this disorder in hot-humid environments, characterized by poor sanitary conditions. During the stay in the areas at greatest risk, adequate precautions must be taken in consuming water, drinks and foods that could be contaminated. Furthermore, flies can act as passive vectors of infectious agents, taking them from one food to another. Attention also to bathing and not using tap water, not even to brush your teeth. Even the characteristics of the traveler are decisive, such as age and previous pathological conditions. In particular, those who are immunosuppressed or on therapy with drugs that decrease gastric acidity (eg ranitidine, omeprazole, etc.) are more exposed to the risk of contracting infections of this type.
