OBJECTIVES: To determine the occurrence of and risk factors for diarrhoea in an adult population exposed to wastewater used for agricultural and aquacultural productions. METHODS: An open cohort of 636 adults aged 15-70 years living in a wastewater-irrigated area in Hanoi was followed by weekly visit for 18 months. The aetiology and risk factors for diarrhoeal diseases were determined in a nested case-control study. Stool specimens and exposure information related to wastewater, hygiene, water and food consumption were collected from 163 unmatched pairs of cases and controls. RESULTS: The incidence rate of diarrhoeal diseases was 28.1 episodes per 100 person-years at risk. Of the 326 stool specimens, 47 cases and 24 controls were identified with enteric pathogens, of which diarrhoeagenic Escherichia coli and Entamoeba histolytica were the most common. Risk factors for diarrhoeal diseases included contact with wastewater [odds ratio (OR) = 1.98, attributable fraction of the population (AF) 35%], not washing hands after defecation (OR = 3.34, AF 3%), drinking water from a well (OR = 6.21, AF 6%), consumption of raw or undercooked foods (OR = 2.45, AF 6%), and contact with persons with diarrhoea (OR = 4.22, AF 5%). CONCLUSION: Wastewater contact was the principal risk factor for diarrhoea in this population. As the local economy depends on the use of wastewater for agriculture and aquaculture, it is important to find ways to mitigate the public health risks associated with this use, in addition to promotions of personal, domestic and food hygiene.
OBJECTIVES: To determine the occurrence of and risk factors for diarrhoea in an adult population exposed to wastewater used for agricultural and aquacultural productions. METHODS: An open cohort of 636 adults aged 15-70 years living in a wastewater-irrigated area in Hanoi was followed by weekly visit for 18 months. The aetiology and risk factors for diarrhoeal diseases were determined in a nested case-control study. Stool specimens and exposure information related to wastewater, hygiene, water and food consumption were collected from 163 unmatched pairs of cases and controls. RESULTS: The incidence rate of diarrhoeal diseases was 28.1 episodes per 100 person-years at risk. Of the 326 stool specimens, 47 cases and 24 controls were identified with enteric pathogens, of which diarrhoeagenic Escherichia coli and Entamoeba histolytica were the most common. Risk factors for diarrhoeal diseases included contact with wastewater [odds ratio (OR) = 1.98, attributable fraction of the population (AF) 35%], not washing hands after defecation (OR = 3.34, AF 3%), drinking water from a well (OR = 6.21, AF 6%), consumption of raw or undercooked foods (OR = 2.45, AF 6%), and contact with persons with diarrhoea (OR = 4.22, AF 5%). CONCLUSION: Wastewater contact was the principal risk factor for diarrhoea in this population. As the local economy depends on the use of wastewater for agriculture and aquaculture, it is important to find ways to mitigate the public health risks associated with this use, in addition to promotions of personal, domestic and food hygiene.
Authors: Kathleen E Fullerton; Elaine Scallan; Martyn D Kirk; Barbara E Mahon; Frederick J Angulo; Henriette de Valk; Wilfrid van Pelt; Charmaine Gauci; Anja M Hauri; Shannon Majowicz; Sarah J O'Brien Journal: Foodborne Pathog Dis Date: 2012-04 Impact factor: 3.171
Authors: Nitin Joseph; Punya Suvarna; S Hariharan Bharadwaj; K S Dhanush; Fathima Raeesa; K K Mohamed Jasir; Nita Joseph; Shashidhar M Kotian; Sharada Rai Journal: Environ Health Prev Med Date: 2016-03-04 Impact factor: 3.674
Authors: Thu Le-Thi; Phuc Pham-Duc; Christian Zurbrügg; Toan Luu-Quoc; Huong Nguyen-Mai; Tu Vu-Van; Hung Nguyen-Viet Journal: Int J Public Health Date: 2016-11-11 Impact factor: 3.380
Authors: Phuc Pham-Duc; Hung Nguyen-Viet; Jan Hattendorf; Phung Dac Cam; Christian Zurbrügg; Jakob Zinsstag; Peter Odermatt Journal: BMC Public Health Date: 2014-09-20 Impact factor: 3.295