Gastro-intestinal flu (gastroenteritis, gastrointestinal infections): contagion
In a gastrointestinal flu (gastroenteritis, gastrointestinal infection), the infection usually happens directly from person to personWho has an infectious diarrhea and vomiting, the pathogen is ruled out in the stool and vomit and distributes them unnoticed in its environment, such as on objects or surfaces.
In that case the gastro-intestinal flu is the consequence of a contact infection - this means that the pathogens reach only on the hands, from there into the mouth and then in the stomach and intestines. This type of infection is called fecal-oral route. Some gastrointestinal pathogens are so contagious that is already sufficient a very small amount to infect someone and cause gastroenteritis: So suffice example of campylobacter infection already about 500 germs and for a norovirus infection even 10 to 100 viruses.
In addition, a gastro-intestinal flu, by droplet infection spread: This type of infection occurs when tiny droplets containing pathogen directly to other people during vomiting over the air. In this way, especially a gastrointestinal virus can spread very rapidly sometimes, for example in kindergartens, hospitals, retirement or nursing homes.
Furthermore, in gastrointestinal flu transmission via contaminated food (V. A. seafood) or beverages (contaminated water) possible. This type of transmission is found Allerding more in warmer regions. So common, for example, the predominantly occurring in the tropics and subtropics amoebic dysentery - agent is the parasite Entamoeba histolytica - often through contaminated drinking water.