Recurrence of Helicobacter pylori infection in adults with intellectual disability.

Although Helicobacter pylori infection is very common among particular groups of adults with intellectual disability, the rate of recurrence (reinfection or recrudescence) is unknown in this population. Thirty-six months after successful treatment of H. pylori, 28 adults with intellectual disability were retested using the faecal antigen test. Six (21%) of 28 patients tested positive, giving an approximate yearly recurrence rate of 7%, a rate considerably higher than that in the general population (<1%). It is recommended that adults with intellectual disability who have had successful treatment of H. pylori be retested for an interval of 3-5 years after treatment.