With first antibiotics Medicine entered in a new era of engineering in this field.Recent pandemics, like AIDS, Avian-FLU and COVID -19 and HANTA-virus cases remind us of the necessity of ongoing research.Vaccination made Covid-19 less aggressive but did not eradicate the disease.Reported cases are now much more protracted and chronic.Recurrence is rather the rule than the exception.Still, a holistic approach is missing in the realm of infections.Away from this highly specialized area, there are simple measures which everyone can observe.