Impact of commercial poultry trading networks on zoonotic disease transmission

Jinnat Ferdous, Md Helal Uddin, Easrat Jahan Esha, Guillaume Fournié, OneHealth Poultry Hub, Suman Das Gupta, UQ Consortium, Joerg Henning

Research output: Other contribution to conferenceAbstractpeer-review

Abstract

1. Objectives: The study aimed to assess poultry traders’ movement patterns and practices and identify how these patterns influence the occurrence of avian infection viruses (AIVs) in poultry.
2. Materials and methods: A longitudinal study was conducted in Bangladesh with 15 live poultry traders supplying Chattogram. A mixed method approach was adopted. Traders’ movements were recorded with a bespoke phone app over 3 consecutive days, thus comprising of 87 daily traders’ trips. Survey questions incorporated in the App captured details of the transactions, while ropharyngeal
swabs collected from chickens at farms and transport endpoints, and environmental samples from vehicles were screened for AIVs. In-depth qualitative interviews with traders and employed staff provided data on perceptions, behaviors and barriers of poultry trading. Network analysis was used to describe movement patterns, and regression models to identify AIV risk
factors, while thematic analysis was applied to the qualitative data.
3. Results: The median distance travelled by traders per trip was 107 km. During each trip, traders visited 1-3 farms (purchasing between 160 to 1,600 birds per farm and transporting in average 820 chicken per truck load) and supplied birds to 6-14 live bird markets or roadside trading shops. In each market, they supplied about 8 vendors. An individual market vendor would purchase a
minimum of 20 and a maximum 445 chickens at a time. While all birds tested negative for AIVs on farms, some had become AIV-positive when tested at the trading endpoints. Qualitative interviews highlighted that employed staff merely follow the instructions provided by traders, including inconsistent adherence to biosecurity measures during loading and unloading of chickens.
4. Conclusions: Traders’ movement patterns and some of their practices were associated with the occurrence of AIV infection in their poultry and need to be addressed to achieve an effective mitigation of zoonotic disease risk.

Conference

Conference16th International Symposium of Veterinary Epidemiology and Economics 2022
Abbreviated titleConnecting animals, people, and their shared environments
Country/TerritoryCanada
CityHalifax
Period07/08/2212/08/22
OtherISVEE is a global forum for those interested in veterinary epidemiology and economics, and related disciplines in the health and social sciences, that provides an opportunity for scientists, health policymakers and other professionals, to exchange information and discuss solutions to help advance health for people, animals, and ecosystems. The 2022 edition will provide insights into various approaches to addressing animal disease spread, including the One Health perspective as well as different modelling approaches to support the control of transboundary diseases such as peste des petits ruminants (PPR) and foot and mouth disease (FMD).
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