&lt;i&gt;Listeria monocytogenes&lt;/i&gt;: the nature, public health aspects and retrospective situations of an emerging infectious pathogen in Nigerian

Chukwu, OOC; Chukwu, I. D.; Olabode, O. K. H.; Nwosuh, CI

doi:10.4314/apra.v2i2.36317

Cited by 2 publications

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“…count obtained from lettuce samples throughout the research period exceeded the satisfactory limits of <1 LogCFU/g and border line of between 1 LogCFU/g and ≤2 LogCFU/g in ready-to-eat vegetables. Chukwu et al(2006) reported that outbreak of listeriosis has not yet been reported in Nigeria and there is limited report on the occurrence of the organism, this might be due to limited attention on the existence of the organism by public health workers and/or poor knowledge of its isolation and identification procedures. E. coli count on lettuce exceeded the satisfactory limit of "not detected in 25 g" reported by Health Protection Agency (2009) and Center for Food Safety (2007) throughout the research period.…”

Section: Resultsmentioning

confidence: 99%

Prevention of microbial hazard on fresh‐cut lettuce through adoption of food safety and hygienic practices by lettuce farmers

Oyinlola

Obadina

Omemu

et al. 2016

Food Science & Nutrition

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Lettuce is consumed raw in salads and is susceptible to microbial contamination through environment, agricultural practices, and its morphology, thus, a potential vehicle for food‐borne illness. This study investigated the effect of adoption of food safety and hygienic practices by lettuce farmers on the microbial safety of field sourced lettuce in Lagos State, Nigeria. Ten structured questionnaires were administered randomly to 10 lettuce farmers to assess food safety and hygienic practices (FSH). Two farmers who practice FSH and two farmers who do not practice NFSH were finally used for this study. Samples of ready‐to‐harvest lettuce, manure applied, and irrigation water were obtained for a period of five months (August – December 2013) and analyzed for total plate count (TPC), total coliform count (TCC), Escherichia coli, Listeria spp., Salmonella spp., and Shigella spp. counts. Result of microbial analyses of lettuce samples was compared with international microbiological specification for ready‐to‐eat foods. Results showed that the range of TPC on lettuce was 6.00 to 8.11 LogCFU/g from FSH farms and TPC of lettuce samples from NFSH farms ranged from 6.66 to 13.64 LogCFU/g. 1.49 to 4.85LogCFU/g were TCC ranges from lettuce samples obtained from FSH farms while NFSH farms had TCC ranging between 3.95 and 10.86 LogCFU/g, respectively. The range of isolated pathogen count on lettuce from FSH and NFSH farms exceeded the international safety standard; there was a significant difference in the microbial count of lettuce from FSH farms and NFSH farms. This study concludes that the lettuce samples obtained did not pass the international microbial safety standards. FSH compliance is a major determinant of the microbial safety of lettuce. Hence, the institution of FSH on farm to improve microbial safety of lettuce produced for public consumption is emphasized.

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Section: Resultsmentioning

confidence: 99%

Prevention of microbial hazard on fresh‐cut lettuce through adoption of food safety and hygienic practices by lettuce farmers

Oyinlola

Obadina

Omemu

et al. 2016

Food Science & Nutrition

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Occurrence of Multi-Drug Resistant <i>Listeria species</i> in Faecal Samples of Poultry Chickens in Rural Farms in Lagos State, Nigeria

Chukwu¹,

Ibeh²,

Davies-Bolorunduro³

2021

AID

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Background: Listeriosis is a common zoonotic disease caused by a foodborne pathogen, Listeria monocytogenes. Poultry meat and products have been established as vehicles of transmission of pathogenic Listeria strains to humans. This study evaluates the occurrence of Listeria species in faeces of poultry chicken in Lagos. Methods: One hundred and fourteen pooled fresh faecal samples from cage-reared broiler chickens were collected from 12 farms in three rural areas in Lagos State from May to August 2019. All samples were analysed for Listeria species detection according to ISO11290-1 standard and confirmed using PCR assay. Susceptibility testing was performed using the Kirby-Bauer disc diffusion technique. Results: Twenty-eight (24.6%) Listeria species were detected from 114 faecal samples. The isolated Listeria species were L. monocytogenes 8 (7.0%), L. ivanovii 9 (7.9%), L. grayi 7 (6.1%) and L. innocua 4 (3.5%). There was no significant difference in the frequency of occurrence of Listeria species across the different locations (X 2 = 4.98, p = 0.08). The listeria species were susceptible to Augmentin (96.4%), vancomycin (85.7%) and co-trimoxazole (82.1%), but resistant to ceftazidime (100%), tetracycline (75.0%) and ciprofloxacin (71.4%). Conclusion: This study reveals high occurrence of multi-drug resistant Listeria species in faecal samples of poultry chickens in Lagos state which may be an important vector in the contamination of the environment and transmission of antibiotic resistant Listeria species to consumers.

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<i>Listeria monocytogenes</i>: the nature, public health aspects and retrospective situations of an emerging infectious pathogen in Nigerian

Cited by 2 publications

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Prevention of microbial hazard on fresh‐cut lettuce through adoption of food safety and hygienic practices by lettuce farmers

Prevention of microbial hazard on fresh‐cut lettuce through adoption of food safety and hygienic practices by lettuce farmers

Occurrence of Multi-Drug Resistant <i>Listeria species</i> in Faecal Samples of Poultry Chickens in Rural Farms in Lagos State, Nigeria

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<i>Listeria monocytogenes</i>: the nature, public health aspects and retrospective situations of an emerging infectious pathogen in Nigerian

Cited by 2 publications

References 0 publications

Prevention of microbial hazard on fresh‐cut lettuce through adoption of food safety and hygienic practices by lettuce farmers

Prevention of microbial hazard on fresh‐cut lettuce through adoption of food safety and hygienic practices by lettuce farmers

Occurrence of Multi-Drug Resistant &lt;i&gt;Listeria species&lt;/i&gt; in Faecal Samples of Poultry Chickens in Rural Farms in Lagos State, Nigeria

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Occurrence of Multi-Drug Resistant <i>Listeria species</i> in Faecal Samples of Poultry Chickens in Rural Farms in Lagos State, Nigeria