Escherichia coli and Salmonella spp. in meat in Jeddah, Saudi Arabia. 2013

Archana Iyer, and Taha Kumosani, and Soonham Yaghmoor, and Elie Barbour, and Esam Azhar, and Steve Harakeh
King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia. arch729@gmail.com.

BACKGROUND Food-borne pathogens are the leading cause of illness and death in developing countries, killing approximately 1.8 million people annually. In developed countries, food-borne pathogens are responsible for millions of cases of infectious gastrointestinal diseases each year, costing billions of dollars. The objective of this study was to screen for two major food-borne pathogens, Escherichia coli and Salmonella spp., from meat samples obtained from different strata of the consumer market in Jeddah. METHODS A total of 60 meat samples, 20 each from large hypermarkets, groceries and small butcher shops were used in the study. Samples were transported to the laboratory in a cooler. They were macerated in peptone water and then seeded on selective media appropriate for each organism. Colonies were identified using conventional microbiological methods and suspected colonies were confirmed as E. coli and Salmonella spp. by polymerase chain reaction (PCR) using specific primers. RESULTS The results indicated a high degree of contamination in samples from butcher shops as compared to those from groceries or hypermarkets (high scale supermarkets). Both pathogens E. coli and Salmonella spp. were found in higher rates in the samples from butcher shops. In small butcher shops, E. coli was found at an incidence of 65%, and Salmonella at 45%. CONCLUSIONS The results indicate an urgent need for applying proper food hygienic practices in food outlets, especially in small ones, to reduce the incidence of food-borne diseases. Vigilance by the right agencies must be implemented in order to prevent future food-borne outbreaks.

UI MeSH Term Description Entries
D008460 Meat The edible portions of any animal used for food including cattle, swine, goats/sheep, poultry, fish, shellfish, and game. Meats
D004926 Escherichia coli A species of gram-negative, facultatively anaerobic, rod-shaped bacteria (GRAM-NEGATIVE FACULTATIVELY ANAEROBIC RODS) commonly found in the lower part of the intestine of warm-blooded animals. It is usually nonpathogenic, but some strains are known to produce DIARRHEA and pyogenic infections. Pathogenic strains (virotypes) are classified by their specific pathogenic mechanisms such as toxins (ENTEROTOXIGENIC ESCHERICHIA COLI), etc. Alkalescens-Dispar Group,Bacillus coli,Bacterium coli,Bacterium coli commune,Diffusely Adherent Escherichia coli,E coli,EAggEC,Enteroaggregative Escherichia coli,Enterococcus coli,Diffusely Adherent E. coli,Enteroaggregative E. coli,Enteroinvasive E. coli,Enteroinvasive Escherichia coli
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001431 Bacteriological Techniques Techniques used in studying bacteria. Bacteriologic Technic,Bacteriologic Technics,Bacteriologic Techniques,Bacteriological Technique,Technic, Bacteriological,Technics, Bacteriological,Technique, Bacteriological,Techniques, Bacteriological,Bacteriologic Technique,Bacteriological Technic,Bacteriological Technics,Technic, Bacteriologic,Technics, Bacteriologic,Technique, Bacteriologic,Techniques, Bacteriologic
D012475 Salmonella A genus of gram-negative, facultatively anaerobic, rod-shaped bacteria that utilizes citrate as a sole carbon source. It is pathogenic for humans, causing enteric fevers, gastroenteritis, and bacteremia. Food poisoning is the most common clinical manifestation. Organisms within this genus are separated on the basis of antigenic characteristics, sugar fermentation patterns, and bacteriophage susceptibility.
D012529 Saudi Arabia A country located in the Middle East, bordering the Persian Gulf and the Red Sea, north of Yemen. The capital is Riyadh. Kingdom of Saudi Arabia
D015995 Prevalence The total number of cases of a given disease in a specified population at a designated time. It is differentiated from INCIDENCE, which refers to the number of new cases in the population at a given time. Period Prevalence,Point Prevalence,Period Prevalences,Point Prevalences,Prevalence, Period,Prevalence, Point,Prevalences
D016133 Polymerase Chain Reaction In vitro method for producing large amounts of specific DNA or RNA fragments of defined length and sequence from small amounts of short oligonucleotide flanking sequences (primers). The essential steps include thermal denaturation of the double-stranded target molecules, annealing of the primers to their complementary sequences, and extension of the annealed primers by enzymatic synthesis with DNA polymerase. The reaction is efficient, specific, and extremely sensitive. Uses for the reaction include disease diagnosis, detection of difficult-to-isolate pathogens, mutation analysis, genetic testing, DNA sequencing, and analyzing evolutionary relationships. Anchored PCR,Inverse PCR,Nested PCR,PCR,Anchored Polymerase Chain Reaction,Inverse Polymerase Chain Reaction,Nested Polymerase Chain Reaction,PCR, Anchored,PCR, Inverse,PCR, Nested,Polymerase Chain Reactions,Reaction, Polymerase Chain,Reactions, Polymerase Chain

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