Crohn’s disease is currently attributed to the sufferer’s own immune system attacking his digestive track. Challenging this long-standing belief is a WSU professor, Davis, who believes the disease may originate from the germ, mycobacterium avium subspecies paratuberculosis (MAP), that is found in cattle. MAP causes Johne’s disease in cows. The symptoms of Johne’s disease in cattle are similar to those experienced by sufferers of Crohn’s disease. Davis is currently working with a team of international scientists to develop a vaccine to fight the spread of the disease he believes is caused by MAP.
How Dangerous is MAP
Over the last century, MAP has infected cattle in large numbers becoming worthy of attention. This germ is secreted in cows’ milk and feces. With the rapid growth of both Crohn’s and Johne’s disease, and in consideration of the similarity of the symptoms, Davis believes there is a link between the diseases.
The suggestion that Crohn’s disease is being transmitted through the food chain has sparked controversy in scientific communities. Evidently, the plausibility of a connection between MAP and eating unpasteurized milk and raw or undercooked meat was enough to warrant a warning issued by the U.S. Department of Agriculture in 2006. The warning was issued as a fact sheet that reported researchers’ concerns about the possibility that MAPS is being transmitted through the food chain from cows to humans with the potential for causing Crohn’s disease.
Controversial Nature of Crohn’s Research
The controversy about MAP focuses on a debate about the impact of MAP on humans. What feeds the controversy is the fact that MAP is found in both healthy and unhealthy people and that all people with MAP present in their system do no become ill with Crohn’s disease. More research is required to prove a conclusive link between MAP and Crohn’s disease. The fact that MAP is not found in all people with Crohn’s disease encourages many skeptics to question any definitive connection. Researcher and physician, William Chamberlain states that he does not need that type of absolute evidence to believe there is a link between MAP and Crohn’s disease.
New Vaccine
Davis and other scientists continue to study the impact of a new vaccine developed to treat MAP. In 2011, the scientists’ findings were published showing promising results. The vaccine prevented the MAP germ from becoming active and causing problems in the cattles’ digestive tract.