An outbreak of campylobacteriosis amongst directing staff and students at the Infantry Training Centre, Brecon, Wales, March 2004.

A cohort study was undertaken to determine the source of an outbreak of gastrointestinal illness affecting a number of military personnel at ITC, Brecon during the period 19--30 March 2004. Of 105 soldiers on a field training exercise over the period 15--19 March 2004, 36 subsequently developed symptoms. Nine patients had Campylobacter sp identified in their stool. Water was provided from a single source. This water was used for washing, shaving, drinking and the preparation of rations. Although not statistically significant, epidemiological investigation suggests that the water may have been the vehicle of infection.