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Opportunities to Interrupt Transmission of Enteropathogens of Poultry Origin in Maputo, Mozambique: A Transmission Model Analysis
- Source :
- Environmental Health Perspectives. November, 2023, Vol. 131 Issue 11, 117004
- Publication Year :
- 2023
-
Abstract
- Background: The burden of diarrheal diseases remains high among children in low- income countries. Enteropathogens are challenging to control because they are transmitted via multiple pathways. Chickens are an important animal protein source, but live chickens and their products are often highly contaminated with enteropathogens. Objectives: We conducted this study to a) understand the contribution of multiple transmission pathways to the force of infection of Campylobacter spp. and nontyphoidal Salmonella spp., b) quantify the potential impact of reducing each pathway on human infection, and c) quantify hypothesized pathway reduction from the context of Maputo, Mozambique. Methods: We developed transmission models for Campylobacter and Salmonella that captured person-to-person, water- to- person, food-to-person, soil-to-person, animal-to-person, and all-other-sources-to-person in an urban, low-income setting in Mozambique. We calibrated these models using prevalence data from Maputo, Mozambique and estimates of attributable fraction of transmission pathways for the region. We simulated the prevalence of human infection after reducing transmission through each pathway. Results: Simulation results indicated that if foodborne transmission were reduced by 90%, the prevalence of Campylobacter and Salmonella infection would decline by [52.2%; 95% credible interval (CrI): 39.7, 63.8] and (46.9%; 95% CrI: 39, 55.4), respectively. Interruption of any other pathway did not have a substantial impact. Combined with survey and microbiology data, if contamination of broiler chicken meat at informal markets in Maputo could be reduced by 90%, the total infection of Campylobacter and Salmonella could be reduced by 21% (16-26%) and 12% (10- 13%), respectively. Discussion: Our transmission models showed that the foodborne transmission has to be reduced to control enteropathogen infections in our study site, and likely in other similar contexts, but mitigation of this transmission pathway has not received sufficient attention. Our model can serve as a tool to identify effective mitigation opportunities to control zoonotic enteropathogens. https://doi.org/10.1289/EHP12314<br />Introduction Diarrheal diseases are a substantial source of childhood morbidity and mortality. (1) In contexts where enteropathogen transmission is high, repeated asymptomatic infections also contributed to undernutrition and growth faltering [...]
- Subjects :
- Medical research -- Health aspects
Medicine, Experimental -- Health aspects
Meat -- Health aspects -- Contamination
Diarrhea -- Health aspects
Poultry industry -- Health aspects
Infection -- Health aspects
Disease transmission -- Health aspects
Food contamination -- Health aspects
Environmental issues
Health
World Health Organization
Subjects
Details
- Language :
- English
- ISSN :
- 00916765
- Volume :
- 131
- Issue :
- 11
- Database :
- Gale General OneFile
- Journal :
- Environmental Health Perspectives
- Publication Type :
- Academic Journal
- Accession number :
- edsgcl.776055751
- Full Text :
- https://doi.org/10.1289/EHP12314