Tehran University of Medical Sciences Journal of Food Safety and Hygiene 2476-3241 5 2 2020 06 20 79 89 Kenlyn Peters Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York, USA. Nilda Valenzuela Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York, USA. Adriana Morales-Gomez Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York, USA. Sanjay Doiphode Hamad Medical Cooperation, Doha, Qatar. Emad Elmagboul Ibrahim Hamad Medical Cooperation, Doha, Qatar. Manik Sharma Hamad Medical Cooperation, Doha, Qatar. Ali Sultan Weill Cornell Medicine Qatar, Doha, Qatar. Hussni O. Mohammed Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York, USA. 2019 07 24 2020 04 13 Foodborne illness has been determined to be one of the major limitations to the advancement of world health. Bacterial pathogens among the leading causes of foodborne illness are Escherichia coli (E. coli), Campylobacter, Salmonella, and Listeria. The risk of these pathogens was investigated among gastroenteritis cases in the diverse population of the state of Qatar. Fecal samples from patients admitted to Hamad Medical Corporation (HMC) with complaints of gastroenteritis were screened for the targeted pathogens using a combination of bacterial enrichments and molecular detection. Salmonella was the most common pathogen (42.9%), followed by E. coli (35.3%), and Campylobacter (21.0%). C. jejuni was the most common species of Campylobacter (67.4%). The probability of detection of E. coli decreased with age. Meanwhile, both probabilities of detection of Campylobacter and Salmonella increased with age. Listeria monocytogenes was much less common among gastroenteritis cases compared to the other pathogens. https://jfsh.tums.ac.ir/index.php/jfsh/article/view/203