Prevalence and Antibiotic Susceptibility Pattern of Escherichia Coll0157:H7 in Raw Beef, Mutton and Chevron at Addis Ababa Abattoir Enterprise and Selected Retail Shops, Addis Ababa, Ethiopia
| dc.contributor.advisor | Girma Zewde | |
| dc.contributor.advisor | Genene Tefera | |
| dc.contributor.author | Tizeta Bekele | |
| dc.date.accessioned | 2026-08-04T10:14:33Z | |
| dc.date.available | 2026-08-04T10:14:33Z | |
| dc.date.issued | 2012-06 | |
| dc.description.abstract | A study on the prevalence of Escherichia coli 0157:H7 and antimicrobial susceptibility test was undertaken on beef, mutton (sheep meat) and chevon (goat's meat) obtained from Addis Ababa abattoir enterprise and retail shops at Addis Ababa from August 20 II to April 2012. A total of 384 raw meat samples consisting of 64 beef, 64 mutton and 64 chevon were collected each from the abattoir and retail shops that mean a total of 128 beef, 128 mutton and 128 chevon were analyzed during the study period. E. coli 0157:H7 was isolated and identified according to Omni Log identification technique. Out of 384 meat samples examined, 39 (10.2%) were positive to E. coli OI57:H7. Among the meat samples examined, beef was the most frequently contaminated with E. coli 0157:H7 with an overall prevalence of 13.3%. Of the examined samples, 9.4% mutton and 7.8% chevon were also positive for E. coli OI57:H7. With regard to meat source, the prevalence rates of E. coli 0 157:H7 at abattoir and at selected retail shops were recorded to be 5.7% and 14.6%, respectively. No significant variation in prevalence rate among the three types of meat types (p>0.05) was observed. However, significant differences in prevalence of E. coli 0157:H7 was observed among meat sources (p<0.05). The antimicrobial susceptibility investigation of 39 E. coli 0157:H7 isolates using 10 commonly marketable antimicrobial discs revealed that the isolates were susceptible to nine antimicrobials from 69.3% to 100% except streptomycin which showed susceptibility of 48.7%. Results of the present study on antimicrobial sensitivity test indicated that an over all resistance of 28.2% and 30.8% was developed to streptomycin and amikacin. Similarly, 5.1%, 5.1%, 7.7%, 12.8% and 17.9% resistance rates were developed against nalidixic acid, tetracycline, amoxicillin-clavulanic acid, cephalothin and ciprofloxacin, respectively. Multidrug resistance to three or more drugs was detected in 4 (57.1%), I (14.3%) and 2 (28.6%) of the isolates from beef, mutton and chevon, respectively. This indicates the possible risk of E. coli 0157:H7 particularly for the consumers who have the habit of eating raw or undercooked meat, elderly and immunocompromised individuals in Ethiopia. These findings stress the need for implementation of E. coli 0157:H7 prevention and control strategies from farm production to consumption of meat and meat products. Keywords: Abattoir, Addis Ababa, Antimicrobials, Escherichia coli 0157:H7, Prevalence, Retail shops, Raw meat | |
| dc.identifier.uri | https://etd.aau.edu.et/handle/123456789/8757 | |
| dc.language.iso | en | |
| dc.publisher | Addis Ababa University | |
| dc.subject | Abattoir | |
| dc.subject | Addis Ababa | |
| dc.subject | Antimicrobials | |
| dc.subject | Escherichia coli 0157:H7 | |
| dc.subject | Prevalence | |
| dc.subject | Retail shops | |
| dc.subject | Raw meat | |
| dc.title | Prevalence and Antibiotic Susceptibility Pattern of Escherichia Coll0157:H7 in Raw Beef, Mutton and Chevron at Addis Ababa Abattoir Enterprise and Selected Retail Shops, Addis Ababa, Ethiopia | |
| dc.type | Thesis |