Repository of Research and Investigative Information

Repository of Research and Investigative Information

Kurdistan University of Medical Sciences

A cholera outbreak in Alborz Province, Iran: a matched case-control study

(2016) A cholera outbreak in Alborz Province, Iran: a matched case-control study. Epidemiology and health.

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OBJECTIVES: A total of 229 confirmed cholera cases were reported in Alborz Province during an outbreak that lasted from June 2011 to August 2011. This study aimed to identify potential sources of transmission in order to determine suitable interventions in similar outbreaks. In other words, the lessons learned from this retrospective study can be utilized to manage future similar outbreaks. METHODS: An age-matched and sex-matched case-control study was conducted during the outbreak. For each case, two control subjects were selected from the neighborhood. A case of cholera was defined as a bacteriologically confirmed case with signs and symptoms of cholera. This study was conducted from June 14, 2011 through August 23, 2011. The data were analyzed by calculating odds ratios (ORs) using the logistic regression method. RESULTS: In this outbreak, 229 confirmed cholera cases were diagnosed. The following risk factors were found to be associated with cholera: consumption of unrefrigerated leftover food (OR, 3.05; 95 confidence interval CI, 1.72 to 5.41), consumption of vegetables and fruits in the previous three days (OR, 2.75; 95% CI, 1.95 to 3.89), and a history of traveling in the previous five days (OR, 5.31; 95% CI, 2.21 to 9.72). CONCLUSIONS: Consumption of vegetables and fruits has remained an unresolved risk factor in cholera outbreaks in Iran in recent years. In order to reduce the risk of cholera, sanitary standards for fruits and vegetables should be observed at all points from production to consumption, the population should be educated regarding hygienic food storage during outbreaks, and sanitary standards should be maintained when traveling during cholera outbreaks.

Item Type: Article
Keywords: adolescent; adult; aged; case control study; child; cholera; epidemic; female; human; infant; Iran; male; middle aged; odds ratio; preschool child; retrospective study; risk factor; very elderly; young adult, Adolescent; Adult; Aged; Aged, 80 and over; Case-Control Studies; Child; Child, Preschool; Cholera; Disease Outbreaks; Female; Humans; Infant; Iran; Male; Middle Aged; Odds Ratio; Retrospective Studies; Risk Factors; Young Adult
Page Range: e2016018
Journal or Publication Title: Epidemiology and health
Volume: 38
Identification Number: 10.4178/epih.e2016018
ISSN: 20927193
Depositing User: مهندس جمال محمودپور

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