Virulent and Multidrug-Resistant STEC Non-O157:H7 in Raw Milk in Khyber Pakhtunkhwa Pakistan: The Need for Proper Quality Surveillance and Assurance Plans

Shiga toxin-producing <i>Escherichia coli</i> (STEC), particularly the non-O157:H7 strains, present a major and growing public health threat in Khyber Pakhtunkhwa, Pakistan. This region, like many others in the country, has a high rate of raw milk consumption, which is often unpasteurized. Raw milk serves as a potential vehicle for STEC transmission due to its susceptibility to contamination at various stages of production, handling, and distribution. These strains of <i>E. coli</i> are highly virulent, and their ability to produce Shiga toxins makes them particularly unsafe. Infections caused by STEC can result in severe foodborne illnesses, such as hemolytic uremic syndrome (HUS), which primarily affects young children and the elderly. A key concern adjoining STEC is their increasing resistance to multiple antibiotics. Multidrug resistance complicates the treatment process, and increasing the possibility of complications. Moreover, these pathogens often go undetected due to inadequate testing facilities and limited public awareness, especially in rural and semi-urban areas. Given these risks, there is an urgent need to implement effective quality surveillance and assurance strategies in the dairy sector. Regular monitoring and microbial testing of milk at both the farm and market levels are essential to detect contamination early. In addition, promoting better hygiene practices among dairy workers and ensuring the cleanliness of equipment can significantly reduce the risk of contamination. Pasteurization of milk should be strongly encouraged to reduce pathogenic microorganisms before consumption. In addition, antibiotic stewardship must be emphasized in dairy farming to prevent the misuse of antibiotics, which contributes to the rise of resistant bacterial strains. By adopting these preventative measures and strengthening regulatory oversight, the health risks associated with STEC in raw milk can be significantly reduced, ultimately safeguarding public health in the region.