While studying viruses best known for infecting the brain, researchers at Washington University School of Medicine in St. Louis stumbled upon clues to a conundrum involving a completely different part of the anatomy: the bowel, and why some people possibly develop digestive problems seemingly out of the blue.
Viruses in blood lead to digestive problems
![](https://pathology.wustl.edu/wp-content/uploads/2018/10/Bowel-300x200.jpg)