“The last thought I had was, ‘Holy s–t, this could be it,'” he recalled, adding that his body was “vibrating” after going into septic shock.

New research may have solved a mystery surrounding Crohn’s disease, a type of inflammatory bowel disease where immune defenses meant to attack invading microbes mistakenly target the body’s own digestive tract instead. Norovirus is a common infection that causes vomiting and diarrhea. It is also one