Nielsen and colleagues compared the risks of IBD between 13,148 patients with documented gastroenteritis caused by Salmonella or Campylobacter and 26,216 uninfected controls.
After accounting for a variety of factors that might influence the risk, stomach bug patients had nearly a threefold increased risk of developing IBD over the entire study period, and nearly a twofold increased risk in the first year after infection.
The increased risk of IBD after the gastroenteritis episode persisted throughout the 15-year observation period and was similar for Salmonella and Campylobacter and for a first-time diagnosis of Crohn's disease and ulcerative colitis.
Steve - this is another reason to supplement with probiotics. You are giving yourself more ammunition to battle pathogens.