scholarly journals Antimicrobial Sensitivity Pattern of Salmonella spp. Clinical Isolates in Blood Culture: A Tertiary Center Study

2020 ◽  
Vol 11 (2) ◽  
pp. 134-137
Author(s):  
ABM Shakil Gani ◽  
Ayman Wadud ◽  
Mizanur Rahman ◽  
Sushmita Roy ◽  
Selin Aktari

Objective: Bangladesh is an endemic area for enteric fever. Adequate and timely antimicrobial treatment invariably cures this disease. But resistant strains of Salmonella spp. have made it difficult to treat nowadays. This study will help clinicians in understanding the local resistance pattern of enteric fever and identifying recent changes in the trends of the sensitivity pattern of commonly used antibiotics in Bangladesh. Materials and Methods: This cross-sectional study was conducted during the period from January 2016 to June 2019 in Sheikh Hasina Medical College, Tangail, to determine the antimicrobial sensitivity patterns of Salmonella typhi and paratyphi isolated by blood culture from clinically suspected typhoid fever patients. The blood sample was processed on BACTEC 9050 and isolates obtained from subculture were serotyped. Then antibiotic susceptibility testing was carried out using the disk diffusion method. Results and Discussion: A total of 137 cases were recorded in four years. All cephalosporins were found sensitive in more than 90% of cases. We did not find any resistance to Ceftriaxone in our patients’ group. Moxifloxacin and Levofloxacin showed higher sensitivity than Ciprofloxacin (100% and 96% Vs 90%). Nalidixic acid demonstrated lower sensitivity than previously reported (less than 5%), while Gentamicin showed the highest sensitivity around 100%. Conclusion: Multidrug-resistant (MDR) Salmonella typhi and paratyphi are emerging rapidly. To overcome this global issue, rational use of antibiotics has to be ensured. Physicians should also be aware of the local resistance pattern so that they can treat their patients effectively. J Shaheed Suhrawardy Med Coll, December 2019, Vol.11(2); 134-137

2013 ◽  
Vol 32 (3) ◽  
pp. 221-228
Author(s):  
Ganesh Kumar Rai ◽  
Subhana Karki ◽  
Bina Prajapati

Introduction: Enteric fever is a public health problem in developing countries including Nepal. Antimicrobial sensitivity pattern of Salmonella sp causing enteric fever is changing over time and also differs according to geographical location. Periodic surveillance of antimicrobial resistance of Salmonella sp is mandatory for management of enteric fever rationally. The objective of this study was to analyze the resistance pattern of Salmonella sp to commonly used antimicrobials. Materials and Methods: This was a retrospective study undertaken reviewing the records of blood isolates of Salmonella sp over one year period at Kanti Children’s Hospital, Nepal. Antimicrobial sensitivity testing was done following Kirby Bauer’s disk diffusion technique using Muller Hinton agar. Results: Salmonella typhi was found to be 100% resistance to ampicillin and resistance to nalidixic acid and ciprofloxacin was also high. The resistance to chloramphenicol and ofloxacin was low. No resistance was found to amoxicillin, ceftriaxone, cefotaxime and amikacin. However, among the sensitive isolates of Salmonella typhi intermediate sensitivity to ceftriaxone and ceftazidime was reported to be high. Among the isolates of S paratyphi A, the resistance to nalidixic acid was 100% followed by 75% to ciprofloxacin. No resistance was found to chloramphenicol, ceftriaxone, cefixime, amikacin and low resistance to amoxicillin and ofloxacin. Among the sensitive isolates of S paratyphi A, majority of them were only moderately sensitive to cefotaxime and ceftazidime and about 1/3 of the organisms had only intermediate sensitivity to ceftriaxone. Conclusiion: Commonly used parenteral third generation cephalosporins, first line drugs like chloramphenicol and amoxicillin and ofloxacin among fluoroquinolones were found to be effective in vitro in treating enteric fever. However, Salmonella typhi was found to be highly resistant to the most frequently used drugs like ciprofloxacin and cefixime and Salmonella paratyphi A to ciprofloxacin. A comparative chart of antimicrobial sensitivity of enteric fever in children over 10 year period from different hospitals of Kathmandu valley is also presented in the study. DOI: http://dx.doi.org/10.3126/jnps.v32i3.6625 J. Nepal Paediatr. SocVol.32(3) 2012 221-228


2016 ◽  
Vol 15 (3) ◽  
pp. 416-418
Author(s):  
Md Khoyber Ali ◽  
Shahin Sultana

Background: Enteric fever is an important public health problem in developing countries including Bangladesh. A changing antibiotic sensitivity pattern of Salmonella typhi and emergence of resistance has increased to a great concern. Objective: Aim of the study was to investigate the antibiotic sensitivity pattern of Salmonella typhi. Methods: A total of 181 Salmonella typhi samples from 5 to 15 years age group were collected from blood culture during the period of October to December 2014 from IBN SINA Hospital, Dhaka, Bangladesh. Specimens from the blood culture were identified by standard procedures as needed. Antimicrobial susceptibility testing was performed by disk diffusion method according to ‘The Clinical Laboratory Standard Institute’ guidelines. Results: Among the tested antibiotics, S. typhi was susceptible to ceftriaxone 100%, followed by cefixime and gentamicin 99.4%, ciprofloxacin 98.6%, cotrimoxazole 88.9%, azithromycin 88.4 % and least susceptible antibiotic was Ampicillin 62.5% and nalidixic acid 5%. Conclusion: The antimicrobial sensitivity testing showed that the Salmonella typhi were highly sensitive (>88%) to most of the drugs used in this study, whereas nalidixic acid showed only 5% sensitivity. So this study indicates that ceftriaxone, cefixime, gentamicin and ciprofloxacin can be used as a first line therapy and nalidixic acid should be avoided for treatment.Bangladesh Journal of Medical Science Vol.15(3) 2016 p.416-418


2021 ◽  
Vol 7 (2) ◽  
pp. 57-60
Author(s):  
Md Badrul Islam ◽  
Sazzad Bin Shahid ◽  
AFM Arshedi Satar ◽  
Md Abdullah Yusuf ◽  
Shoriful Islam ◽  
...  

Background: Salmonella thyphi and Salmonella paratyphi A are the members of Enterobactoriaceae and gram negative rods causing typhoid fever & partyphoid fever respectively. Automated blood culture system is the standard diagnostic method. Objective: The purpose of the present study was to see the prevalence and antibiotic resistance pattern of Salmonella typhi and Salmonella paratyphi A isolated by automated blood culture system. Methodology: This cross-sectional study was done in the Microbiology Lab at IBN Sina D. Lab and consultation center, Doyagonj, Dhaka, Bangladesh from January 2019 to June 2019. Blood culture was performed by automated blood culture method. Sensitivity pattern of antibiotic was measured by Disk diffusion method. Result: A total of 3240 blood samples were collected from suspected patients. Among them, bacteria were isolated 336 (10.37%). The most common isolated bacteria were Salmonella typhi which was 261(77.68%) cases and Salmonella paratyphi A which was in 60 (17.86%) cases. Salmonella typhi is the most common organism and showed sensitivity pattern to imipenem 97.3%, colistin 80.46% and amikain 77.4% and Salmonella paratyphi A showed. Sensitivity pattern to imipenem 93.3% and amikacin 83.3%. Conclusion: In conclusion high rate of Salmonella typhi and Salmonella paratyphi A are isolated during blood culture showing less sensitive to imipenem and amikacin. Bangladesh Journal of Infectious Diseases 2020;7(2):57-60


2020 ◽  
Vol 33 (2) ◽  
pp. 10-14
Author(s):  
Md Azizul Haque ◽  
Laila Shamima Sharmin ◽  
KM Faisal Alam ◽  
Md Mohimanul Hoque ◽  
M Morsed Zaman Miah ◽  
...  

Typhoid and paratyphoid fevers, collectively known as enteric fever, is caused by Salmonella enterica subspecies serovars Typhi and Paratyphi A, B and C. Despite this declining global trend, enteric fever is still considered to be a major public health hazard in Bangladesh and other developing countries due to poor sanitation, inadequate food safety measures and poor personal hygiene. In Bangladesh, the incidence of typhoid fever was reported to be 200 episodes per 100,000 person-years during 2003–2004. Multidrug-resistant (resistance to the first-line antimicrobials ampicillin, cotrimoxazole, and chloramphenicol) strains of S. Typhi and S. Paratyphi are on the rise globally and even cases of extensively drug-resistant (XDR) typhoid cases resistant to chloramphenicol, ampicillin, trimethoprim-sulfamethoxazole, third generation cephalosporins and fluoroquinolones are being reported from many corners of the world. This descriptive, observational study was carried out in Rajshahi Medical College Hospital Hospital, Rajshahi, Bangladesh from July 2017 to June 2019. Antibiotic sensitivity pattern of total 76 cases of enteric fever due to Salmonella Typhi were studied. Blood culture was carried out by BACT ALERT-3D, Automated blood culture analyzer from BioMeriuex SA, France Patented FAN Plus method. Based on the minimum inhibitory concentration (MIC), the organism was categorized as sensitive, intermediate, and resistant against the respective antibiotics as per Clinical and Laboratory Standards Institute (CLSI) criteria. We are reporting antibiotic sensitivity and resistant patterns of S. Typhi documented in Rajshahi Medical College Hospital, a large tertiary care hospital in Northern Bangladesh. TAJ 2020; 33(2): 10-14


2018 ◽  
Vol 16 (2) ◽  
pp. 228-232
Author(s):  
Rajesh Dhoj Joshi ◽  
Sachin Khadka ◽  
Deepak Man Joshi ◽  
Basudha Shrestha ◽  
Ganesh Dangal ◽  
...  

Background: For diagnosis of enteric fever, the culture of the organism from different body fluids is the gold standard. After diagnosis, it is important to treat with the right antibiotic before any complications can occur. The retrospective study is designed to explore the antibiotic sensitivity trend in blood culture positive typhoid fever cases and the extent of drug resistance before treatment is administered.Methods: A retrospective study was carried out for culture isolated enteric fever patients admitted in Kathmandu Model Hospital. The discharged records from January 2012 to December 2016 were analyzed. The patients above 15 years and with culture isolated enteric fever were included in the study.Results: One hundred fifty-nine strains of Salmonella typhi and paratyphi were isolated from Jan 2012 to Dec 2016 at Kathmandu Model Hospital. Out of 159 isolated, 125 (78.6%) were Salmonella typhi and 34 (21.4%) were paratyphi. Among them co-trimoxazole, chloramphenicol, ceftriaxone, cefotaxime, cefixime, and ofloxacin demonstrated 100% sensitivity. Similarly, amoxicillin sensitivity was 98.1% (n=156) while ciprofloxacin was sensitive in 6.3% (n=10), intermediately sensitive in 49.1% (n=78) and resistance in 44.7% (n=71).The newer quinolone levofloxacin showed 78.5% (n=11) sensitivity. Azithromycin was sensitive in 99.2% (n=132) of total isolated Salmonella species both typhi and paratyphi. Conclusions: A high degree of sensitivity was noted to chloramphenicol and co-trimoxazole, showing sensitivity has returned to conventional antibiotics. The drug-like ofloxacin is still the best responding drug in our contest whereas ciprofloxacin resistance is still high, but five years patterns show a trend of rollback of sensitivity. Keywords: Cephalosporin; enteric fever; sensitivity.


2018 ◽  
Vol 16 (2) ◽  
pp. 228-232 ◽  
Author(s):  
Rajesh Dhoj Joshi ◽  
Sachin Khadka ◽  
Deepak Man Joshi ◽  
Basudha Shrestha ◽  
Ganesh Dangal ◽  
...  

Background: For diagnosis of enteric fever, the culture of the organism from different body fluids is the gold standard. After diagnosis, it is important to treat with the right antibiotic before any complications can occur. The retrospective study is designed to explore the antibiotic sensitivity trend in blood culture positive typhoid fever cases and the extent of drug resistance before treatment is administered.Methods: A retrospective study was carried out for culture isolated enteric fever patients admitted in Kathmandu Model Hospital. The discharged records from January 2012 to December 2016 were analyzed. The patients above 15 years and with culture isolated enteric fever were included in the study.Results: One hundred fifty-nine strains of Salmonella typhi and paratyphi were isolated from Jan 2012 to Dec 2016 at Kathmandu Model Hospital. Out of 159 isolated, 125 (78.6%) were Salmonella typhi and 34 (21.4%) were paratyphi. Among them co-trimoxazole, chloramphenicol, ceftriaxone, cefotaxime, cefixime, and ofloxacin demonstrated 100% sensitivity. Similarly, amoxicillin sensitivity was 98.1% (n=156) while ciprofloxacin was sensitive in 6.3% (n=10), intermediately sensitive in 49.1% (n=78) and resistance in 44.7% (n=71).The newer quinolone levofloxacin showed 78.5% (n=11) sensitivity. Azithromycin was sensitive in 99.2% (n=132) of total isolated Salmonella species both typhi and paratyphi.Conclusions: A high degree of sensitivity was noted to chloramphenicol and co-trimoxazole, showing sensitivity has returned to conventional antibiotics. The drug-like ofloxacin is still the best responding drug in our contest whereas ciprofloxacin resistance is still high, but five years patterns show a trend of rollback of sensitivity.


Author(s):  
Dr. Manish Kulshrestha ◽  
Dr. Anjali Kulshrestha

INTRODUCTION: Enteric fever includes typhoid and paratyphoid fever. Peak incidence is seen in children 5–15 years of age; but in regions where the disease is highly endemic, as in India, children younger than 5 years of age may have the highest infection rates. There are about 22 million new typhoid cases occur each year. Young children in poor, resource limited areas, who make up the majority of the new cases and there is a mortality figures of 215,000 deaths annually. A sharp decline in the rates of complications and mortality due to typhoid fever is observed as a result of introduction of effective antibiotic therapy since 1950s. MDR-ST became endemic in many areas of Asia, including India soon after multidrug-resistant strains of Salmonella enterica serotype typhi (MDR-ST) that were resistant to all the three first-line drugs then in use, namely chloramphenicol, amoxycillin and co-trimoxazole emerged in early 1990s. MATERIAL AND METHODS: Only blood culture or bone marrow culture positive cases were included. The patients with culture isolated enteric fever were included in the study. Antimicrobial susceptibility testing was carried out by disk diffusion method using antibiotic discs. The analysis of the antimicrobial susceptibility was carried out as per CLSI interpretative guidelines. RESULTS: A total of 82 culture positive cases were included in the present study. 80 culture isolates were from blood culture and 2 from the bone marrow culture. Salmonella entericasubspecies enterica serovartyphi (S typhi) was isolated from 67 (81.70%) patients while Salmonella enterica subspecies entericaserovarparatyphi (S paratyphi A) was isolated from 13 (15.85%) cases and 2 (2.44%) were Salmonella enterica subspecies entericaserovarschottmuelleri (S paratyphi B). Of the 82 cases 65(79.3%) isolates were resistant to ciprofloxacin, 17 (20.7%) were resistant to nalidixic acid, one (1.2%) case each was resistant to Cefotaxime and ceftriaxone, 2 (2.4%) were resistant to chloramphenicol, 10 (12.2%) were resistant and to cotrimoxazole 3 (3.7%) were resistant. CONCLUSION: In a culture positive cases 65(79.3%) isolates were resistant to ciprofloxacin and 17 (20.7%) were resistant to nalidixic acid. Multidrug resistant isolates were 65(79.3%).


Author(s):  
Bassey Ewa Ekeng ◽  
Ubleni Ettah Emanghe ◽  
Bernard Ekpan Monjol ◽  
Anthony Achizie Iwuafor ◽  
Ernest Afu Ochang ◽  
...  

Aim: Bloodstream infections are a major cause of morbidity and mortality worldwide. The prevalence of causative microorganisms varies from one geographical region to another. This study was aimed at determining the etiological agents prevalent in our environment and their susceptibility profile. Study design: This is a retrospective study carried out at the University of Calabar Teaching Hospital, Calabar, Nigeria. Methodology: Blood culture results of patients documented over a two-year period were retrieved and analyzed. Blood culture positive isolates were detected using conventional method and Oxoid signal blood culture systems. Antimicrobial sensitivity tests were carried out by Kirby-Bauer disc diffusion method. Methicillin resistance in Staphylococcus aureus and coagulase negative Staphylococcus species (CoNS) was detected by disk diffusion method using 30 µg cefoxitin disk. ESBL production was detected by phenotypic confirmatory disc diffusion test (PCDDT) and the double disc synergy test (DDST). Results: A total of 413 blood culture antimicrobial susceptibility test results were analyzed, of which 116 (28.09%) were identified as culture positive. Sixty-nine (59%) of the positive isolates were from female patients. Out of 116 positive cultures, 58.62% (68/116) were Gram positive organisms, 40.52% (47/116) were Gram negative organisms, non albicans Candida accounted for 0.86% (1/116).  Staphylococcus aureus (n=41, 35.3%) was the predominant isolate and showed high sensitivity to levofloxacin (100%), Linezolid (100%) and Amikacin (100%). Twelve isolates of S. aureus were methicillin resistant, while 1 isolate was inducible clindamycin resistant. Of the 116 isolates identified in this study, forty-three (43) were multidrug resistant with highest number of multidrug resistant isolates from Staphylococcus aureus (n=20). 21.28% (n=10) of the Gram-negative isolates were positive for extended spectrum beta lactamases. Conclusion: A high rate of antimicrobial resistance is observed among microorganisms causing blood stream infections. This emphasizes the need for antimicrobial sensitivity testing in the management of blood stream infections.


2015 ◽  
Vol 3 (1) ◽  
pp. 34-39 ◽  
Author(s):  
Nagalakshmi Narayana-Swamy ◽  
Padmasri Ramalingappa ◽  
Urvashi Bhatara

Background: The vagina contains dozens of microbiological species in variable quantities and is, therefore, considered a complex environment. Among the microorganisms, bacteria have important repercussions on women’s health. The present study was conducted to elucidate this type of vaginal isolates and their sensitivity towards currently used antibiotics. Methods: This was a retrospective study conducted at the Department of Obstetrics and Gynaecology, Sapthagiri Hospital, Bangalore, India from January 2012 to December 2013. All symptomatic women who had a high vaginal swab taken for culture and sensitivity testing were included in this study. Antibiotic susceptibility was tested using disc diffusion method (modified Kirby-Bauer’s method). The antibiotic sensitivity patterns of isolated microorganisms were studied. Results: Out of 200 patients, 95% had positive vaginal cultures. Fifteen types of microorganisms were isolated. The highest frequency of infection was seen at the age of 20-30 years, followed by 41-50 years and 31-40 years, and a low frequency of infection was observed above 50 years of age. The most prevalent pathogen was Escherichia coli, followed by Streptococcus agalactiae and diphtheroids with equal incidence. Among the antibiotics tested, isolated pathogens were completely resistant to nalidixic acid and highly sensitive to meropenem and imepenem. Conclusion: The high prevalence of gynaecological infections demands that patients with symptoms undergo thorough investigation with cultures and sensitivity essays. Changes in treatment protocols are required to treat vaginal infections effectively.


2019 ◽  
Vol 10 (2) ◽  
pp. 96-98 ◽  
Author(s):  
Mst Naznin Tarana ◽  
Samshad Jahan Shumu ◽  
Rashida Akter Khanam ◽  
Hosne Jahan ◽  
Soma Sarker ◽  
...  

Background: Typhoid fever remains a public health concern in developing countries. Antibiotic therapy constitutes the mainstay of management and multidrug resistant Salmonella spp has been emerged as a major public health concern. Objective: This study was done to evaluate antimicrobial sensitivity pattern of Salmonella typhi isolated from blood in Shaheed Suhrawardy Medical College Hospital. Methods: The retrospective study was done from January 2017 to December 2017 at microbiology laboratory, Shaheed Suhrawardy Medical College. A total of 367 samples, 30 isolates of Salmonella typhi obtained from blood culture. Both the indoor and outdoor patients were enrolled in this study. Results: During one year study period, total 367 cases were enrolled and the prevalence of Salmonella typhi was 30 (8.2 %). Among them (56.1%) were male with a male to female ratio 1.27:1. The bulk (50.1%) cases were in the age group of 15-30 years, 14.4% cases were in less than 15 years and 6.5% cases were in more than 60 years of age. Regarding antibiotic sensitivity pattern, 70% strains were sensitive to amikacin, 73.33% to azithromycin, 63.33% to ceftazidime, 66.66% to ceftriaxone, 86.66% to ciprofloxacin and 70% were nalidixic acid resistant Salmonella typhi. Conclusion: Ciprofloxacin may be used to treat typhoid fever cases and Ceftriaxone, azithromycin may be used as alternative drugs if they are found susceptible in culture and sensitivity testing. J Shaheed Suhrawardy Med Coll, December 2018, Vol.10(2); 96-98


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