scholarly journals Prevalence and Antimicrobial Susceptibility Profile ofSalmonellaSerovars Isolated from Slaughtered Cattle in Addis Ababa, Ethiopia

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Lidya Ketema ◽  
Zerihun Ketema ◽  
Bitsu Kiflu ◽  
Haile Alemayehu ◽  
Yitagele Terefe ◽  
...  

Salmonellais one of the top causes of foodborne bacterial illnesses in humans. The primary sources of humanSalmonellainfection are food producing animals such as cattle, poultry, and swine. A cross-sectional study was undertaken to estimate the prevalence and to determine the serovar distribution and antimicrobial susceptibility profiles ofSalmonellaspp. isolated from fecal (n=567) and carcass swab (n=159) samples of slaughtered cattle at Addis Ababa Abattoir Enterprise and Kara’alo PLC, Abattoirs, in Addis Ababa, Ethiopia between January 2014 and April 2015.Salmonellaisolation was conducted according to Global Foodborne Infections Network Laboratory Protocol and isolates were confirmed by genus specific PCR and serotyped by slide agglutination test. Susceptibility of the isolates to 17 antimicrobials was testedusing the Kirby-Bauer disk diffusion method according to the guidelines of the Clinical and Laboratory Standards Institute. Out of the total 726 samples examined, 27 (3.7%) were positive forSalmonella. Salmonellawas detected in 4.1% (23/567) fecal and 2.5% (4/159) carcass swab samples. Twelve different serovars were identified and the most predominant serovars wereS. Dublin (n=10, 35.7%) andS. Virchow (n=5, 17.9%), followed byS. Braendrerup,S. Haifa, andS. Saintpaul which were isolated from 2 samples each (7.1%). All of theSalmonellaisolates investigated were resistant or intermediately resistant to four or more of the 17 drugs tested. High resistance rate was recorded to streptomycin 25 (89.3%), cephalothin 20 (71.4%), ampicillin 19 (67.9%), and amoxicillin+clavulanic acid 19 (67.9%). Resistance to five or more antimicrobials was detected in 20 (71.5%) of the isolates. Multidrug resistance to more than 7 antimicrobials was detected in 5 (17.9%) of the isolates. Isolation of such multidrug resistant strains ofSalmonellafrom slaughtered cattle poses a major public health concern. These findings imply the need for a strict biosecurity and regulation of antimicrobial use across the country.

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Saba Gebremichael Tekele ◽  
Dejenie Shiferaw Teklu ◽  
Melese Hailu Legese ◽  
Daniel Gebretsadik Weldehana ◽  
Melaku Ashagrie Belete ◽  
...  

Background. The emergence and spread of multi-drug resistant (MDR) bacteria have become a public health problem in recent years. For the last many years, carbapenem antibiotics have been used successfully to treat infections caused by MDR Enterobacteriaceae. However, recently, Enterobacteriaceae producing carbapenemases have emerged, which confer broad resistance to most β-lactam antibiotics including carbapenems. Therefore, this study is aimed at determining the magnitude of MDR and carbapenemase-producing Enterobacteriaceae (CPE) isolated from various clinical specimens in Addis Ababa, Ethiopia. Methods. A cross-sectional study was conducted from January to April 2018. A total of 312 Enterobacteriaceae isolates were identified from various clinical specimens. The Phoenix automated system (BD Phoenix100) was used for bacterial identification and antimicrobial susceptibility testing. Potential carbapenemase producers were confirmed by the modified carbapenem inactivation test, and KPC, MBL, and OXA-48 were phenotypically characterized by the disk diffusion method. The data obtained were entered and analyzed using SPSS version 20 software. Descriptive statistics, chi square, bivariate and multivariable logistic regression analyses were performed. P value ≤ 0.05 with corresponding 95% confidence interval was considered for statistical significance. Results. A total of 312 Enterobacteriaceae were recovered. Of these isolates, 68.6% were MDR and 2.6% were CPE with different classes including OXA-48 1.6% (5/312), MBL 0.6% (2/312), and KPC and OXA-48 0.3% (1/312). The predominant bacterial isolates were E. coli 72.4% (226/312) followed by K. pneumoniae 13.8% (43/312). The antibiotic resistance rates of CPE isolates were significantly higher than other MDRE including ampicillin (100% versus 77.6%), cefoxitin (75% versus 20.6%), and piperacillin/tazobactam (50% versus 13.1%). Conclusion. In this study, a relatively higher prevalence of MDR was observed, and the highest resistance was recorded against ampicillin, amoxicillin with clavulanic acid, and sulfamethoxazole-trimethoprim. Detection of CPE is important for implementing appropriate antimicrobial therapy and in controlling the spread of the infection. Furthermore, continuous screening and investigations, including genotypic characterization of CPE, are required for the prevention and control of the spread of antimicrobial-resistant pathogens.


2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Endrias Zewdu Gebremedhin ◽  
Gezahegn Tafesse Soboka ◽  
Bizunesh Mideksa Borana ◽  
Lencho Megersa Marami ◽  
Edilu Jorga Sarba ◽  
...  

Background. Salmonella has been recognized as a major cause of food-borne illness associated with the consumption of food of animal origin. The present cross-sectional study was conducted from December 2017 to May 2018 in Ambo and Holeta towns to assess the prevalence, risk factors, and antimicrobial susceptibility patterns of nontyphoidal Salmonella isolates from raw beef samples from abattoirs, butchers, and restaurants in Ambo and Holeta towns, Oromia region, Ethiopia. Methods. A total of 354 beef samples were collected from abattoirs, butchers, and restaurants. Salmonella isolation and identification were carried out using standard bacteriological methods recommended by the International Organization for Standardization. Antimicrobial susceptibility testing was performed using the disk diffusion method. Besides, a structured questionnaire was used to collect sociodemographic data and potential risk factors for contamination of meat. Chi-square tests and logistic regression were used for data analyses. Results. Of the total 354 meat samples examined, 20 (5.7%, 95% confidence interval (CI): 3.5–8.6) were positive for Salmonella. Two serotypes belonging to S. typhimurium (11 isolates) and I:4,5,12: i:- (9 isolates) were identified. The Salmonella detection rate in abattoirs, butchers, and restaurants was 4.2% (5/118), 8.5% (10/118), and 4.2% (5/118), respectively. The antimicrobial susceptibility test showed that 40%, 30%, and 20% of the Salmonella isolates were resistant to azithromycin, amoxicillin, and ceftriaxone, respectively. The odds of Salmonella isolation when meat handlers are illiterate were 7.8 times higher than those when they are educated to the level of secondary and above ( P = 0.032 ). Similarly, the likelihood of Salmonella isolation was 6.3 and 7.6 times higher among workers of butcher and restaurants, respectively, who had no training ( P = 0.003 ) and no knowledge ( P = 0.010 ) on food safety and hygiene. Conclusions. The study showed widespread multidrug-resistant Salmonella isolates in the study areas. Therefore, raw meat consumption and indiscriminate use of antimicrobial drugs should be discouraged. Provision of food safety education for meat handlers and further surveillance of antimicrobial-resistant isolates are suggested.


2021 ◽  
Vol 12 ◽  
Author(s):  
Aklilu Feleke Haile ◽  
Silvia Alonso ◽  
Nega Berhe ◽  
Tizeta Bekele Atoma ◽  
Prosper N. Boyaka ◽  
...  

Escherichia coli O157:H7 is an important foodborne pathogen but largely under investigated in Africa. The objectives of this study were to estimate the prevalence and pattern of antimicrobial resistance of E. coli O157:H7 in lettuce in Addis Ababa, Ethiopia. A total of 390 retail lettuce samples were collected across the 10 subcities of Addis Ababa. E. coli O157:H7 was isolated and identified following ISO-16654:2001 standard. The isolates were further tested for antimicrobial susceptibility to 13 antimicrobials using the Kirby–Bauer disk diffusion method. Out of the 390 lettuce samples examined, two (0.51%) carried E. coli O157:H7. The antimicrobial susceptibility pattern of strains showed resistance to ampicillin (100%) and tetracycline (50.0%). One of the two isolates was multidrug resistant to two antimicrobials tested. The results of this study demonstrate the presence of drug-resistant E. coli O157:H7 in lettuce in markets in Addis Ababa. Despite the low prevalence, its presence in a product that is eaten raw highlights potential public health risk in the area associated with this pathogen.


2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Laila Chaoui ◽  
RajaaAit Mhand ◽  
Fouad Mellouki ◽  
Naima Rhallabi

Nosocomial infections (NIs) are known worldwide and remain a major problem despite scientific and technical advances in the field of health. The severity of the infection depends on the characteristics of the microorganisms involved and the high frequency of resistant pathogens in the hospital environment. The aim of this study is to determine the distribution of pathogenic bacteria (and their resistance to antibiotics) that spread on hospital surfaces, more specifically, on those of various departments in the Provincial Hospital Center (PHC) of Mohammedia, Morocco. A cross-sectional study was conducted from March 2017 to April 2018. Samples were collected by swabbing the hospital surfaces, and the isolated bacteria were checked for their susceptibility to antibiotics by the Kirby–Bauer disk diffusion method following the standards of the Clinical and Laboratory Standards Institute (CLSI). Among 200 swab samples, 176 (88%) showed bacterial growth. Gram-negative isolates were predominant at 51.5% (101/196), while the Gram-positives were at 48.5% (95/196). The main isolates are Enterobacteria weighted at 31.6% (62/196), Staphylococcus aureus reaching 24% (47/196), Pseudomonas aeruginosa at 9.2% (18/196), and Acinetobacter spp. with 3.3% (6/196). Moreover, the antimicrobial susceptibility profile of the isolates showed that about 31.7% (32/101) of the Gram-negative isolates were found to be MDR. This resistance is also high among isolates of S. aureus of which 44.7% (20/47) were methicillin-resistant Staphylococcus aureus (MRSA). Contamination of hospital surfaces by MDR bacteria is a real danger to public health. The concept of environmental bacterial reservoir is a reality that requires strict compliance with current guidelines and recommendations for hand hygiene, cleaning, and disinfection of surfaces in hospitals.


2021 ◽  
Vol 11 (01) ◽  
pp. e28-e34
Author(s):  
Kevin B. Edem ◽  
Enobong E. Ikpeme ◽  
Mkpouto U. Akpan

AbstractSurveillance of the carrier state for β-hemolytic streptococcal (BHS) throat infections remains essential for disease control. Recent published works from Sub-Saharan Africa have suggested a changing epidemiology in the burden of BHS throat infections. The objective of the present study was therefore to determine the prevalence and pattern of BHS throat carriage in school-aged children in Uyo, Akwa Ibom State. This was a prospective cross-sectional study of 276 primary school children in Uyo. Subjects were recruited by multistage random sampling. Obtained throat swabs were cultured on 5% sheep blood agar. Lancefield grouping on positive cultures was done by using the Oxoid Streptococcal Grouping Latex Agglutination Kit, United Kingdom. Antimicrobial susceptibility testing was done with the disk diffusion method. Associations were tested with Fischer's exact test. The prevalence of BHS carriage was 3.3%. Group C Streptococcus was identified in 89% of isolates and Group G Streptococcus in 11%. Younger age and larger household size were associated with asymptomatic streptococcal throat infections. Antimicrobial susceptibility was highest with cefuroxime and clindamycin (89% of isolates each), while 78% of isolates were susceptible to penicillin. None of the tested isolates was susceptible to co-trimoxazole. The prevalence of streptococcal throat carriage in the study area was low. There were no Group A Streptococcus isolates suggesting an evolving epidemiology of BHS disease in the study area.


2016 ◽  
Vol 7 (5) ◽  
pp. 47-51 ◽  
Author(s):  
Yadav Prasad Joshi ◽  
Shreejeet Shrestha ◽  
Russell Kabir ◽  
Anita Thapa ◽  
Parbati Upreti ◽  
...  

Background:Urinary tract infection is the most common bacterial infections in humans and serious health problem in many parts of the world. It has become more complicated in treatment due to different pathogens and increasing resistant to antimicrobial agents. This study aims to investigate the prevalence of urinary tract infection and antibiotic susceptibility patterns of pathogens among the patients attending in B & B hospital Nepal.Materials and Methods:A hospital based cross sectional study was conducted in between April 2010 to March 2011. Urine samples were collected from clinically suspected patients and tested bacteriologically using standard procedures. Antimicrobial susceptibility test was performed for isolated pathogen using the Kirby-Bauer disk diffusion method according to Clinical and Laboratory Standards Institute guidelines.Results:Out of 1260 examined specimens 25.24 % were positive and majority 61.64% were females.  The most common pathogens isolated were Escherichia coli (66.67%), Enterococcus (7.55%) and Staphylococcus (6.60 %). The drug resistant among the positive cases were reported. The highest resistant of positive cases was found with Cefexime (87.88%) and Enterococcus with Ampicillin (66.67%) and Staphyllococcus with Cloxacillin (66.67%). The highest susceptibility was for Vancomycin and Ampicillin i.e. 33.33% in each.Conclusion:The findings showed that E. coli isolates were the predominant pathogen and the presence of bacterial isolates with very high resistance to the commonly prescribed drugs. As drug resistance among bacterial pathogens is an evolving process and serious issue. Therefore, routine surveillance and monitoring studies should be conducted to provide physicians knowledge on the updated and most effective empirical treatment of UTIs. Asian Journal of Medical Sciences Vol.7(5) 2016 47-51


2015 ◽  
Vol 8 (1) ◽  
pp. 71-75 ◽  
Author(s):  
Olga I Chub ◽  
Aleksandr V Bilchenko ◽  
Igor Khalin

Background : Increased multidrug resistance of extended-spectrum beta-lactamases (ESBLs) compromises the efficacy of treatment of urinary tract infections. Objective : The objective of this study is to determine the prevalence of ESBL-producing uropathogens from hospitalized patients with chronic pyelonephritis and to identify the presence of genes involved in the resistance. Methods : A cross-sectional study of 105 patients with chronic pyelonephritis, treated in Kharkiv City Clinical Emergency Hospital, Ukraine was carried. Bacterial isolates were collected, antimicrobial susceptibility of isolates was determined by the Kirby Bauer disk diffusion method and screening for the presence of blaSHV, blaTEM, blaCTX-M ESBL genes was performed by polymerase chain reaction. Results : 84 (80%) patients had positive urine cultures. Eschеrichia coli wаs the most common microorganism isolated. Among them, 29 (25.2%) were found to be ESBL producers. Out of 53 E. coli isolates, 10 (18.9%), 4 (7.5%) and 6 (11.3%) were identified to carry bla(TEM), bla(SHV) and bla(CTX-M) beta-lactamase genes, respectively. The highest resistance was observed against ampicillin (75.9%), ciprofloxacin (48.3%), levofloxacin (41.4%) and gentamicin (41.4%). Beside this, only meropenem (96.6% susceptibility), nitroxolinum (86.2%) and fosfomycin (72.4%) exhibited a good enough activity against ESBLs-producing urinary strains. Conclusion : Isоlation and detеction of ESBL-prоducing strаins are еssential fоr the sеlection оf the mоst effеctive antibiоtic for the empiric trеatment.


2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Feleke Moges ◽  
Setegn Eshetie ◽  
Mengistu Endris ◽  
Kahsay Huruy ◽  
Dagnachew Muluye ◽  
...  

Background. Cockroaches are source of bacterial infections and this study was aimed to assess bacterial isolates and their antimicrobial profiles from cockroaches in Gondar town, Ethiopia.Methods. A total of 60 cockroaches were collected from March 1 to May 30, 2014, in Gondar town. Bacterial species were isolated from external and internal parts of cockroaches. Disk diffusion method was used to determine antibiotic susceptibility patterns. Data were entered and analyzed by using SPSS version 20;Pvalues <0.005 were considered as statistically significant.Results. Of 181 identified bacteria species, 110 (60.8%) and 71 (39.2%) were identified from external and internal parts of cockroaches, respectively.Klebsiella pneumoniae32 (17.7%),Escherichia coli29 (16%), andCitrobacterspp. 27 (15%) were the predominant isolates. High resistance rate was observed to cotrimoxazole, 60 (33.1%), and least resistance rate was noted to ciprofloxacin, 2 (1.1%). Additionally, 116 (64.1%) of the isolates were MDR strains;Salmonellaspp. were the leading MDR isolates (100%) followed byEnterobacter(90.5%) andShigellaspp. (76.9%).Conclusion. Cockroaches are the potential source of bacteria pathogens with multidrug resistant strains and hence effective preventive and control measures are required to minimize cockroach related infections.


2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Firew Tadesse Kusheno ◽  
Teklehaimanot Mezgebe Nguse ◽  
Gebremedhin Beedemariam Gebretekle

Background. Multidrug-resistant tuberculosis (MDR-TB) is becoming a major challenge of tuberculosis (TB) control program globally but more serious in developing countries like Ethiopia. In 2013, a survey result showed that in Ethiopia, tuberculosis patients from new cases and retreatment cases had resistance to at least isoniazid and rifampicin with a significant increase over time. Inadequate knowledge and wrong perception about MDR-TB by patients were detrimental to TB control programs. The study aimed at assessing the knowledge and attitude of TB patients of direct observation therapy program towards multidrug-resistant tuberculosis in health centres of Addis Ababa, Ethiopia. Methods. A cross-sectional study was conducted in 10 health centres of Addis Ababa which were selected by simple random sampling technique. A total of 422 TB patients were included in the study, and participants from each health centres were taken proportional to the number of clients in each health centres. Data was entered and analyzed using SPSS version 20. Association between outcome and independent variables was explored using logistic regression. Results. The level of knowledge of TB patients about MDR-TB was poor and only 55.0% of TB patients attained good overall knowledge. A significant association was found between good knowledge and attending tertiary level of education (AOR=4.3, 95%CI=1.9, 9.8), gender (AOR=1.62, 95%CI=1.1, 2.4), income of respondents’ family (OR=0.4, 95%CI=0.2, 0.9), and sleeping practice (AOR=8.0, 95%CI=4.0, 15.7). Nearly three-fourths (73.5%) of TB patients had a favourable attitude towards MDR-TB. Occupational status (AOR=4.4, 95%CI=2.5, 7.6) and sleeping practices (AOR=2.4, 95%CI=1.2, 5.0) were significantly associated with the attitude of the TB patients. Conclusions. Knowledge of TB patients toward MDR-TB was poor. Although a large proportion of patients had a favourable attitude, it still needs to be improved. Hence, efforts should be made to implementing health education to improve awareness of TB patients about MDR-TB.


2018 ◽  
Vol 4 (2) ◽  
pp. 30-34 ◽  
Author(s):  
Surovi Era Suchi ◽  
SM Shamsuzzaman ◽  
Bhuiyan Mohammad Mahtab Uddin ◽  
Md Abdullah Yusuf

Background: The genus Enterococcus is of increasing significance as a cause of nosocomial infections and this trend is exacerbated by the development of antibiotic resistance.Objective: The aims of this study was to find out the susceptibility pattern and the prevalence of virulence genes in Enterococcus strains isolated from urinary tract infection in Bangladesh.Methodology: This cross-sectional study was conducted in the Department of Microbiology at Dhaka Medical College, Dhaka from January 2015 to December 2015 for a period of one (01) years. All the admitted patients in the Dhaka Medical College & Hospital, Dhaka and Banghabandhu Sheikh Mujib Medical University, Dhaka who were  presented with clinical features of urinary tract infection at any age with both sexes were included as study population. The antimicrobial susceptibility of the strains was determined using the disk diffusion method; vancomycin susceptibility pattern was detected by MIC method. PCR was performed for the detection of genus-species, vanA, vanB gene and potential virulence genes.Result: Out of 84 Enterococci, majority (71.42%) of the isolates were E. faecalis followed by 23.81% were E. faecium. Regarding antimicrobial susceptibility pattern, 100% isolated Enterococci were sensitive to vancomycin, linezolid and teicoplanin. Most of the Enterococci were resistant to ciprofloxacin and ceftriaxone (92.86%) followed by 88.10% to gentamicin and 85.71% to azithromycin and rifampicin. No VRE was identified and the range of MIC for vancomycin was 1-4 µg/ml. None of the Enterococci was positive for vanA and vanB genes. Out of total E. faecalis and E. faecium, 87.50% were positive for ebp and 77.5%, 72.5%, 55.0%, 45.0%, 40.0% and 10.0% of isolates were positive for gelE, esp, ace, cyl, asa and hyl respectively.Conclusion: Almost all the virulence genes were more prevalent in E. faecalis isolates.Bangladesh Journal of Infectious Diseases 2017;4(2):30-34


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