2023, Vol. 4, Issue 2, Part A
Prevalence and antibiogram of Listeria monocytogenes isolated from seafood sold in Rivers state, Nigeria
Author(s): Barika PN, Akani NP, Amadi LO and Sampson T
Abstract: The health implication of Listeria monocytogenes seafood a global issue and their antibiotic resistance cannot be overemphasized. This study aimed to investigate the prevalence and antibiogram of Listeria monocytogenes isolated from seafood sold in Rivers State, Nigeria. A total of 126 raw and parboiled samples of Buccinum undatum (Whelks), Crassostrea gasar (Oyster) and Penaeus monodon (Prawn) were collected from different markets (Bakana, Creek road and Kaa) and analyzed for the presence of Listeria monocytogenes using standard conventional methods such as culturing on a selective medium, Polymyxin Acriflavin Lithium-chloride Ceftazidime Esculin Mannitol Agar. The Kirby-Bauer disc diffusion method was used for antibiotic susceptibility pattern. The total Listeria count (x102 CFU/g) in raw and parboiled Oyster, Prawn and Whelks which ranged between 1.6±0.3 to 2.9±0.4: 1.5±0.2 to 2.3±0.2; 1.6±0.4 to 3.2±0.7: 1.2±0.2 to 1.9±0.5; 2.8±0.4 to 3.6±0.3: 1.7±0.3 to 2.6±0.3 for Bakana and Creek road markets, respectively. There was a significant difference (p≤0.05) in the Listeria count. A total of 25 (19.84%) Listeria monocytogenes were isolated from the seafood samples with high prevalence in Penaeus monodon (Prawn) (62.5%) samples. L. monocytogenes were (100%) resistant to Cefixime, Ceftazidime, Cefuroxime and Ciprofloxacin and sensitive to Ofloxacin (76%) and all the isolates had a MAR index ≥0.2. It was observed in this study that Listeria monocytogenes had a relatively high prevalence in the seafood and majority of the isolates exhibited resistance to multiple antibiotics. The findings could be used to inform public health policies and guide the implementation of preventive strategies to reduce the risk of listeriosis.
Pages: 33-37 | Views: 311 | Downloads: 101
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How to cite this article:
Barika PN, Akani NP, Amadi LO, Sampson T. Prevalence and antibiogram of Listeria monocytogenes isolated from seafood sold in Rivers state, Nigeria. J Adv Microbiol Res 2023;4(2):33-37.
