Ulm (CNN) – the stomach bacterium Helicobacter pylori could protect Ulmer scientists according to allergies and diarrhoeal diseases. «We have preliminary evidence that the permanent infection with the bacterium strengthens the immune system of childhood», Maria Weyermann said of the Department of epidemiology, University of Ulm on Tuesday. Currently, the University carrying out a nationwide unique infant review. The bacterium can cause but also peptic ulcers and stomach cancer. So far, the study showed that in expectant mothers milk antibodies against Helicobacter pylori were. And this even when mothers who had no infection at the time of the inspection: «It the immunological memory of the mother is mobilised here after former germ contact to give the child the maximum antibody protection via breast milk.» So far, the time of infection for children was unknown. You only know that the germ of early childhood will be transferred. “After the first year, only two percent of our babies were infected”, said Weyermann. Also, the location must still be explored. A mouth to-mouth transmission through the mother conceivable. Worldwide, approximately 50% of the population with the stomach bacterium are infected according to Weyermann. However, only a relatively small part of the affected complaints have. «In violent pain in upper abdomen, a course of antibiotics may eradicate the seeds.» Should the infected but have no complaints, a treatment was unnecessary. The Ulm infant study mothers and their children participate in 1060, who were born between November 2000 and November 2001 in the Ulm University Women hospital. «We want to recognize, when Helicobacter pylori situates in the stomach, how the infection is transmitted and it is how durable», said Weyermann. Also, it should be checked whether certain allergies or diarrhoeal complaints occur less frequently if a child with the germ of the stomach is infected.