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- W4384927370 abstract "Abstract Background Listeria monocytogenes is an opportunistic and emerging foodborne zoonotic pathogen that encompasses a diversity of strains with varied virulence and can cause serious human and animal infections worldwide. It has low incidence but high hospitalization and case fatality rates. The aims of this study were to assess the prevalence of L. monocytogenes and its serotypes, and determine antimicrobial resistance pattern of isolates in Mekelle City, Ethiopia. Methods A cross-sectional study was conducted from December 2016 to June 2017 in Mekelle City, Ethiopia and a total of 768 (n = 384 of milk and n = 384 meat) samples of bovine origin were collected using a purposive random sampling technique. Isolation and identification of L. monocytogenes were done according to standard and recommended bacteriological procedures. Genome-based confirmation of each isolate was performed at species and serovar levels by targeting Iap , Imo0737 , ORF2819 , and ORF2110 genes using specific primers. In vitro antimicrobial susceptibility testing was performed using agar plate antibiotic disk diffusion method. Descriptive statistics, Chi-square test (χ 2 ), and logistic regression were applied. Results The overall prevalence of L. monocytogenes was 26 (3.39%). Prevalence rates of L. monocytogenes were 4.17% and 2.6% in meat and milk samples, respectively. There was a statistically significant difference (p < 0.05) in the prevalence rates of the organism in meat samples collected from abattoir (1.67%), butcher shops (8.33%), and restaurants (8.33%). Serovars that were identified belonged to 1/2b and 4b. Large proportions of isolates were highly susceptible to ampicillin (88.46%) and vancomycin (84.62%). However, the isolates had shown the highest level of resistance against nalidixic acid (96.15%). The highest intermediate resistance rate was observed for amoxicillin (57.69%). Moreover, 42.31% of the isolates developed resistance to more than two antimicrobial agents. Conclusions Hence, both its occurrence and development of a multi-drug resistance indicated that a coordinated effort is imperative to reduce or eliminate the risk posed by this pathogen in food chains and on controlled and careful use of antimicrobials both in veterinary and human treatment regimes." @default.
- W4384927370 created "2023-07-22" @default.
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- W4384927370 date "2023-07-20" @default.
- W4384927370 modified "2023-09-25" @default.
- W4384927370 title "Occurrence, antimicrobial resistance pattern and molecular characterization of Listeria monocytogenes isolated from bovine’s milk and meat in Mekelle City, Ethiopia" @default.
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- W4384927370 doi "https://doi.org/10.21203/rs.3.rs-3082175/v1" @default.
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