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The Journal of Health, Population and Nutrition
ISSN: 1606-0997
EISSN: 1606-0997
Vol. 28, No. 2, 2010, pp. 149-158
Bioline Code: hn10020
Full paper language: English
Document type: Research Article
Document available free of charge

The Journal of Health, Population and Nutrition, Vol. 28, No. 2, 2010, pp. 149-158

 en Burden of Acute Gastrointestinal Illness in Gálvez, Argentina, 2007
Thomas, M. Kate; Perez, Enrique; Majowicz, Shannon E.; Reid-Smith, Richard; Albil, Silvia; Monteverde, Marcos & McEwen, Scott A.


This study evaluated the magnitude and distribution of acute gastrointestinal illness (GI) in Gálvez, Argentina, and assessed the outcome of a seven-day versus 30-day recall period in survey methodology. A crosssectional population survey, with either a seven-day or a 30-day retrospective recall period, was conducted through door-to-door visits to randomly-selected residents during the ‘high’ and the ‘low’ seasons of GI in the community. Comparisons were made between the annual incidence rates obtained using the sevenday and the 30-day recall period. Using the 30-day recall period, the mean annual incidence rates was 0.43 (low season of GI) and 0.49 (high season of GI) episodes per person-year. Using the seven-day recall period, the mean annual incidence rate was 0.76 (low season of GI) and 2.66 (high season of GI) episodes per person-year. This study highlights the significant burden of GI in a South American community and confirms the importance of seasonality when investigating GI in the population. The findings suggest that a longer recall period may underestimate the burden of GI in retrospective population surveys of GI.

Cross-sectional studies; Developing country; Diarrhoea; Foodborne diseases; Morbidity; Population surveys; Recall bias; Waterborne diseases; Argentina

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