Campylobacteriosis is an infectious disease caused by C. jejuni. It is also referred to as Campylobacter enteritis or gastroenteritis. Most cases of C. jejuni are sporadic (appearing singly or at widely scattered places) or involve small family groups, although some common-source outbreaks involving many people have been recorded. It is believed that consuming less than 500 cells can cause illness.
But many people in developing countries, and people living in rural areas of developed countries (including many First Nations communities) do not take safe drinking water for granted. They understand the relationship that exists between safe drinking water and good health, because they have experienced waterborne disease firsthand.