edoc

Health risks for sanitation service workers along a container-based urine collection system and resource recovery value chain

Bischel, Heather N. and Caduff, Lea and Schindelholz, Simon and Kohn, Tamar and Julian, Timothy R.. (2019) Health risks for sanitation service workers along a container-based urine collection system and resource recovery value chain. Environmental science & technology, 53 (12). pp. 7055-7067.

[img] PDF - Published Version
Available under License CC BY (Attribution).

4Mb

Official URL: https://edoc.unibas.ch/71269/

Downloads: Statistics Overview

Abstract

Container-based sanitation (CBS) within a comprehensive service system value chain offers a low-cost sanitation option with potential for revenue generation but may increase microbial health risks to sanitation service workers. This study assessed occupational exposure to rotavirus and Shigella spp. during CBS urine collection and subsequent struvite fertilizer production in eThekwini, South Africa. Primary data included high resolution sequences of hand-object contacts from annotated video and measurement of fecal contamination from urine and surfaces likely to be contacted. A stochastic model incorporated chronological surface contacts, pathogen concentrations in urine, and literature data on transfer efficiencies of pathogens to model pathogen concentrations on hands and risk of infection from hand-to-mouth contacts. The probability of infection was highest from exposure to rotavirus during urine collection (∼10; -1; ) and struvite production (∼10; -2; ), though risks from Shigella spp. during urine collection (∼10; -3; ) and struvite production (∼10; -4; ) were non-negligible. Notably, risk of infection was higher during urine collection than during struvite production due to contact with contaminated urine transport containers. In the scale-up of CBS, disinfection of urine transport containers is expected to reduce pathogen transmission. Exposure data from this study can be used to evaluate the effectiveness of measures to protect sanitation service workers.
Faculties and Departments:09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH)
09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH) > Department of Epidemiology and Public Health (EPH) > Eco System Health Sciences > Ecosystem Services, Climate & Health (Cissé)
UniBasel Contributors:Julian, Timothy
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Chemical Society
ISSN:0013-936X
e-ISSN:1520-5851
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:10 Jul 2019 12:59
Deposited On:10 Jul 2019 12:59

Repository Staff Only: item control page