By M Aqeel Anjum
The global burden of foodborne diseases, particularly those caused by Salmonella spp., has increased substantially over recent decades. At the same time, antimicrobial resistance (AMR) is escalating, complicating treatment outcomes and increasing healthcare costs. This article examines the interconnected roles of genomic surveillance, agricultural water safety, and food e-commerce regulation in mitigating foodborne disease risks. It highlights Whole Genome Sequencing (WGS) as a transformative surveillance tool, identifies unsafe irrigation water as a critical but under-addressed transmission pathway for AMR, and explores emerging regulatory gaps associated with online food delivery platforms. Using a One Health framework, the article outlines policy priorities essential for strengthening food safety systems in low- and middle-income countries.
1. Introduction
Foodborne diseases remain a persistent global public health challenge, with Salmonella among the leading causes of morbidity and mortality. Contamination may occur at multiple points along the food supply chain, including primary production, processing, distribution, retail, and consumption. The increasing complexity and globalization of food systems have amplified the difficulty of outbreak detection and control, necessitating more precise and timely surveillance mechanisms.
2. Whole Genome Sequencing and Food Safety Surveillance
Whole Genome Sequencing has fundamentally reshaped pathogen surveillance by enabling comprehensive genetic characterization of bacterial isolates. WGS allows public health authorities to accurately identify outbreak sources, establish genetic relatedness between cases, and trace contamination pathways across geographically dispersed food networks. Countries that have integrated WGS into national surveillance systems report faster outbreak resolution, improved traceability, and enhanced regulatory enforcement. As food supply chains become increasingly interconnected, WGS represents a critical tool for modern food safety governance.
3. Antimicrobial Resistance as a Food Safety Threat
AMR has emerged as one of the most pressing global health emergencies. Foodborne pathogens, including Salmonella, increasingly harbor resistance genes that limit treatment options and increase disease severity. Multidrug-resistant infections result in prolonged hospital stays, higher treatment costs, and elevated mortality risk. The food chain plays a significant role in the dissemination of resistant bacteria, linking agricultural practices, environmental contamination, and human health outcomes.
4. Agricultural Water and Environmental Transmission
Water quality used in food production is a key determinant of food safety. In water-stressed regions, the reuse of treated wastewater for irrigation has become common practice. However, evidence indicates that secondary-treated wastewater may still contain antimicrobial-resistant bacteria and resistance genes capable of contaminating fresh produce. Advanced tertiary treatment, particularly when combined with effective disinfection, significantly reduces these risks and can eliminate detectable pathogens. Ensuring safe irrigation water is therefore essential for interrupting environmental transmission of foodborne pathogens and AMR.
5. Food E-Commerce and Regulatory Challenges
The rapid expansion of online food delivery and digital food marketplaces has introduced new challenges for food safety regulation. In many developing countries, regulatory frameworks have not evolved in parallel with digital food systems. Gaps in oversight, limited traceability, and unclear accountability mechanisms increase consumer exposure to unsafe food. Strengthening regulatory controls and adapting enforcement strategies to digital platforms are critical to maintaining food safety in this evolving landscape.
6. A One Health Approach to Risk Mitigation
The interconnected nature of foodborne disease, AMR, and environmental contamination underscores the importance of a One Health approach. Integrating human health, animal health, and environmental management enables coordinated interventions across sectors. Surveillance data, regulatory policy, agricultural practices, and public health response must be aligned to effectively reduce pathogen transmission and slow the spread of resistance.
7. Policy Implications and Recommendations
To strengthen food safety systems and address emerging risks, the following actions are recommended:
Integrate Whole Genome Sequencing into national foodborne disease surveillance programs.
Enforce tertiary wastewater treatment standards for irrigation water used in food production.
Expand national AMR surveillance and promote intersectoral data sharing.
Establish clear, enforceable regulatory frameworks for food e-commerce and delivery services.
8. Conclusion
Foodborne Salmonella infections, antimicrobial resistance, unsafe agricultural water, and weak regulation of digital food markets represent interconnected and escalating public health threats. Without strategic investment in genomic surveillance, advanced water treatment, and adaptive regulatory systems, these risks will continue to intensify. For countries such as Pakistan, aligning national food safety policies with global best practices is no longer optional—it is essential for protecting public health, strengthening health systems, and supporting sustainable economic development.
