Acute gastrointestinal illness in New Zealand: A community study

Abstract

We report the results of the New Zealand Acute Gastrointestinal Illness (AGI) Community Study, a representative cross-sectional community telephone survey of 3655 participants conducted over a 12-month period. Respondents were asked questions about vomiting and diarrhoea in the previous 4 weeks. At least one episode of diarrhoea and/or vomiting was reported by 86% of respondents, an incidence of 111 episodes/person per year. Prevalence was highest in children aged <5 years and lowest in those aged >64 years. The mean duration of illness was 25 days and most common symptoms were diarrhoea (825%), stomach cramps (757%), nausea (569%) and vomiting (490%). Extrapolation of the adjusted estimates indicates there are about 466 million episodes of AGI per year in New Zealand, nearly 1 million visits to the general medical practitioner, in excess of 300 000 courses of antibiotics being dispensed and more than 45 million days of paid work lost due to AGI. This represents a significant burden of disease. © 2010 Cambridge University Press.