Annual Trend in Reports of<unk>  Infection in England and Wales (2000–2011). Source: HPA Laboratory reports of<unk>  infections in England and Wales 2000–2012. Source: HPA, NB Testing methods changed in 2007<unk>  causes about 18% of all cases of acute gastroenteritis worldwide. It is relatively common in developed countries and in low-mortality developing countries (20% and 19% respectively) compared to high-mortality developing countries (14%). Proportionately it causes more illness in people in the community or in hospital outpatients (24% and 20% respectively) as compared with hospital inpatients (17%) in whom other causes are more common. Age and emergence of new<unk>  strains do not appear to affect the proportion of gastroenteritis attributable to<unk> .<unk>  is a common cause of epidemics of gastroenteritis on cruise ships. The CDC through its Vessel Sanitation Program records and investigates outbreaks of gastrointestinal illness—mostly caused by<unk> —on cruise ships with both a US and foreign itinerary; there were 12 in 2015, and 10 from 1 January to 9 May 2016. An outbreak may affect over 25% of passengers, and a smaller proportion of crew members.
Norovirus
Rotavirus
Campylobacter jejuni
Enterotoxigenic Escherichia coli
Giardia
Yersinia enterocolitica
Salmonella
Dhori virus