stomach bug

Hello all, we as a family are very frequent visitors to wonderful Icmeler. However we have been increasingly concerned re the apparent outbreak of ??? Gastroenteritis. Can anyone reasure us that all steps have been taken by local environmental health to investigate the possible cause of this severe outbreak. Four members of my own family have recently returned to England with severe Gastroenteritis which took two weeks to recover from, having suffered extreamly painfull stomach cramps sickness and diarroea. We are more concerned as we intend to return in a few weeks. Any help would be appreciated thank you.