Epidemiology of Shiga toxin-producing Escherichia coli O157:H7 in Africa in review

Lupindu, Athumani M.

doi:10.4102/sajid.v33i1.31

Cited by 26 publications

(37 citation statements)

References 61 publications

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“…It is likely that these kinds of cases have not been reported or the causative agents of food poisonings have not been identified. Lack of direct link between isolates from humans and other sources makes it difficult to point out incident specific determinants and direction of transmission (Lupindu, 2017). But, it seems that incidences found in this study seem to be higher than those previous studies for other food products.…”

Section: Resultscontrasting

confidence: 91%

“…Globally, STEC caused 2,801,000 acute illnesses annually, with an incidence rate of 43.1 cases per 100,000 persons per year. This burden led to 3890 cases of HUS and 230 deaths (Lupindu, 2017). Large outbreaks of EHEC infection were reported throughout the world.…”

Section: Introductionmentioning

confidence: 99%

“…One of the largest E. coli O157:H7 (one of the serotypes of EHEC) outbreaks associated with food consumption occurred in Sakai City, Japan in 1996. About a quarter of African countries have reported isolation of STEC 0157:H7 either from humans, animals, food or the environment (Lupindu, 2017;Yusuf et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Isolation of Escherichia coli 0157:H7 from selected food samples sold in local markets in Nigeria

Asime¹,

Egbe²,

Cecilia³

2020

Afr. J. Food Sci.

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Food borne illnesses have major social and economic impacts. Escherichia coli O157:H7 is associated with food borne illness in human beings. It has been an important food borne pathogen that causes food borne diseases such as diarrhea, hemolytic uremic syndrome and hemorrhagic colitis. This study was conducted to detect the presence of E. coli O157: H7 in different food samples sold in Nigerian local markets. A total of 60 different food samples (3 each of meat, fufu, waterleaf, pumpkin, carrot, tomatoes, meat pie, yoghurt, watermelon, cucumber, groundnut, cabbage, garden egg, bread, okra, apple, chicken, unpasteurized milk, salad and pawpaw) were collected randomly from different markets in Calabar, Nigeria. The samples were analyzed using standard microbiological techniques. Isolation was carried out using pour plate technique on sorbitol MacConkey agar. The isolates were identified by morphological and biochemical tests. Out of the 60 samples investigated, 36 (60%) were found to be contaminated with E. coli O157:H7 while 24 (40%) were negative by conventional methods. All the isolates obtained from the samples were subjected to various biochemical tests and were all confirmed to be E. coli O157:H7. The occurrence of E. coli O157:H7 serotype in these food products indicates that there may be a potential risk for public health from consuming these foods. This study clearly indicated the need for proper handling and processing of food products especially ready to eat food products. It is also important that at household level proper hygienic measures should be taken to avoid cross contamination.

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Section: Resultscontrasting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

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Isolation of Escherichia coli 0157:H7 from selected food samples sold in local markets in Nigeria

Asime¹,

Egbe²,

Cecilia³

2020

Afr. J. Food Sci.

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“…E. coli O157:H7 is a public health significant foodborne and waterborne zoonotic pathogen causing diseases in humans which range from uncomplicated diarrhoea to haemorrhagic colitis (HC) and haemolytic uremic syndrome (HUS) [203]. E. coli O157:H7 causes about 73,000 illnesses in the United States annually [204].…”

Section: Some Bacterial Pathogens With Outbreak Potentials and Thementioning

confidence: 99%

Preharvest Transmission Routes of Fresh Produce Associated Bacterial Pathogens with Outbreak Potentials: A Review

Iwu

Okoh

2019

IJERPH

137

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Disease outbreaks caused by the ingestion of contaminated vegetables and fruits pose a significant problem to human health. The sources of contamination of these food products at the preharvest level of agricultural production, most importantly, agricultural soil and irrigation water, serve as potential reservoirs of some clinically significant foodborne pathogenic bacteria. These clinically important bacteria include: Klebsiella spp., Salmonella spp., Citrobacter spp., Shigella spp., Enterobacter spp., Listeria monocytogenes and pathogenic E. coli (and E. coli O157:H7) all of which have the potential to cause disease outbreaks. Most of these pathogens acquire antimicrobial resistance (AR) determinants due to AR selective pressure within the agroecosystem and become resistant against most available treatment options, further aggravating risks to human and environmental health, and food safety. This review critically outlines the following issues with regards to fresh produce; the global burden of fresh produce-related foodborne diseases, contamination between the continuum of farm to table, preharvest transmission routes, AR profiles, and possible interventions to minimize the preharvest contamination of fresh produce. This review reveals that the primary production niches of the agro-ecosystem play a significant role in the transmission of fresh produce associated pathogens as well as their resistant variants, thus detrimental to food safety and public health.

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“…Recent reviews have indicated that E. coli 0157 and Salmonella spp. are amongst the most important pathogens in Africa [79,80]. On the other hand, it was estimated that the cost of a recent listeriosis outbreak in South Africa was in excess of US $15 million [81].…”

Section: Discussionmentioning

confidence: 99%

Meta-Analysis and Meta-Regression Indicate Dynamic Prevalence and Moderators of Foodborne Pathogens in African Indigenous Fermented Milk

et al. 2019

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As more microbiological data for indigenous fermented milk (IFM) becomes available, concern about their microbial safety becomes eminent. Nonetheless, these data are highly fragmented, and a tool is required to integrate existing data and to provide a basis for data-driven decision making for IFM’s safety. Therefore, meta-analysis and meta-regression were conducted to estimate the prevalence of foodborne pathogens in IFM and to determine factors influencing the estimated values. Using Africa as a case, searches were systematically made for published data and relevant grey literature. Data from 18 studies in 15 countries were analyzed. Staphylococcus aureus (37%), pathogenic Escherichia coli (16%), Listeria monocytogenes (6%), and Salmonella spp. (3%) were the most prevalent pathogens with a pooled prevalence estimate of 12%. Heterogeneity among prevalence estimates was attributed to sampling point and microbial group but could be moderated by publication year, country cluster, and methods for microbial confirmation. The pooled prevalence estimates increased over time as more studies became available, whereby the odds were higher in studies from 2010 onwards than studies before 2010. From the analyses, S. aureus presented the greatest safety concern in African IFM. Future microbiological studies should take into consideration different IFM sampling points and advanced analytical methods to identify pathogens.

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Epidemiology of Shiga toxin-producing Escherichia coli O157:H7 in Africa in review

Cited by 26 publications

References 61 publications

Isolation of Escherichia coli 0157:H7 from selected food samples sold in local markets in Nigeria

Isolation of Escherichia coli 0157:H7 from selected food samples sold in local markets in Nigeria

Preharvest Transmission Routes of Fresh Produce Associated Bacterial Pathogens with Outbreak Potentials: A Review

Meta-Analysis and Meta-Regression Indicate Dynamic Prevalence and Moderators of Foodborne Pathogens in African Indigenous Fermented Milk

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