ICAEWâs Code of Ethics is based on the Code of Ethics for Professional Accountants of the International Ethics Standards Board for Accountants (IESBA) published by the International Federation of Accountants (IFAC)â Code of Ethics in 2009 and is used with permission of IFAC*.
Diarrhoea is usually a symptom of gastroenteritis (a bowel infection), which can be caused by: 1  a virus â such as norovirus or rotavirus. 2  bacteria â such as campylobacter, Clostridium difficile (C. 3  parasites â such as the Giardia intestinalis parasite that causes giardiasis.
Viruses. The virus that most commonly causes diarrhoea and vomiting is the norovirus. It's easily spread from person to person, through contaminated food or water. Raw shellfish, particularly oysters, can also be a source of infection.iruses. The virus that most commonly causes diarrhoea and vomiting is the norovirus. It's easily spread from person to person, through contaminated food or water. Raw shellfish, particularly oysters, can also be a source of infection.