scholarly journals Antimicrobial susceptibility patterns of β-lactamase producing Staphylococcus Aureus

1970 ◽  
Vol 4 (2) ◽  
pp. 14-17
Author(s):  
Narjis Maliha Kawsar ◽  
Md Eunus Ali Mondal ◽  
Nizamul Karim Khan ◽  
Nishat Jubaida ◽  
Jamal Pasha Chowdhury ◽  
...  

doi:10.3329/jafmc.v4i2.1838JAFMC Bangladesh Vol.4(2) 2008 14-17

2019 ◽  
Vol 6 (Supplement_2) ◽  
pp. S229-S229
Author(s):  
Jae Hong Choi ◽  
Hyunju Lee ◽  
Eun Hwa Choi

Abstract Background Staphylococcal scalded skin syndrome (SSSS) is a blistering and desquamative skin disease caused by the exfoliative toxins of Staphylococcus aureus. SSSS mainly affects children younger than 5 years of age. Although many countries show a predominance of methicillin-susceptible S. aureus (MSSA), recently an increase in cases due to methicillin-resistant S. aureus (MRSA) has been reported. We investigated the molecular characteristics of S. aureus isolated from the children with SSSS in Korea. Methods From January 2010 to December 2017, children clinically diagnosed as SSSS under the age of 5 years were enrolled. Cases from 3 different university hospitals in Korea were included. S. aureus isolated from nasal, axillary, or inguinal area of the children were analyzed for multilocus sequence type and exfoliative toxins (eta, etb). Medical records were retrospectively reviewed for clinical characteristics and antimicrobial susceptibility patterns of S. aureus. Results A total of 26 cases were enrolled. The mean age was 2.3 years (range, 0–4.8 years). Twenty-two (84.6%) patients were hospitalized. Skin manifestations were classified as follows; generalized (n = 10, 38.5%), intermediate (n = 11, 42.3%), and abortive (n = 5, 19.2%). Twenty-five isolates (96.2%) were resistant to methicillin and macrolide-resistance was found in 92.3% (n = 24). ST89 (n = 21, 80.8%) was the most prevalent clone, with single clones of ST1, ST5, ST72, ST121, and ST1507. The eta gene was detected in 1 (3.8%) MSSA isolate. The etb gene was detected in 14 (53.8%) isolates all of which were ST89. All patients were treated with antibiotics, and the mean duration was 8.3 days regardless of the administration route. Nafcillin or first cephalosporin was most commonly prescribed (n = 20, 76.9%), clindamycin was administered in combination in 9 patients (34.6%) and vancomycin in 4 patients (15.4%). Among the 25 MRSA cases, only 6 (24.0%) were treated with susceptible antibiotics. However, there was no difference in treatment duration according to antimicrobial susceptibility (8.43:8.22 days, P > 0.05). Conclusion The molecular epidemiology of S. aureus isolated from the Korean children with SSSS demonstrated the high prevalence of methicillin-resistant ST89 clone that harbors the etb gene. Disclosures All authors: No reported disclosures.


2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
Salu Rai ◽  
Uday Narayan Yadav ◽  
Narayan Dutt Pant ◽  
Jaya Krishna Yakha ◽  
Prem Prasad Tripathi ◽  
...  

In Nepal, little is known about the microbiological profile of wound infections in children and their antimicrobial susceptibility patterns. Total of 450 pus/wound swab samples collected were cultured using standard microbiological techniques and the colonies grown were identified with the help of biochemical tests. The antimicrobial susceptibility testing was performed by Kirby-Bauer disc diffusion technique. Methicillin-resistantStaphylococcus aureusisolates were detected by using cefoxitin disc and confirmed by determining minimum inhibitory concentrations (MIC) of oxacillin. 264 (59%) samples were culture positive. The highest incidence of bacterial infections was noted in the age group of less than 1 year (76%). Out of 264 growth positive samples, Gram-positive bacteria were isolated from 162 (61%) samples and Gram-negative bacteria were found in 102 (39%) samples.Staphylococcus aureus(99%) was the predominant Gram-positive bacteria isolated andPseudomonas aeruginosa(44%) was predominant Gram-negative bacteria. About 19% ofS. aureusisolates were found to be methicillin-resistant MIC of oxacillin ranging from 4 μg/mL to 128 μg/mL. Among the children of Nepal, those of age less than 1 year were at higher risk of wound infections by bacteria.Staphylococcus aureusfollowed byPseudomonas aeruginosawere the most common bacteria causing wound infections in children.


2019 ◽  
Vol 13 (1) ◽  
pp. 102-107
Author(s):  
Nadheema Hammood Hussein

Background: First six to twelve months after initial urinary tract infection, most infections are caused by Escherichiacoli, although in the first year of life Klebsiella pneumoniae, Pseudomonas, Enterobacter spp andEnterococcus spp, are more frequent than later in life, and there is a higher risk of urosepsis compared with adulthood Objectives: To determine the prevalence of bacterial isolates from Urinary Tract Infections of children at a children hospital in Baghdad and their antimicrobial susceptibility patterns. Type of the study: Cross-sectional study. Methods: During six months of study (1 June to 31 December, 2016), 117urine specimens were collected from a children hospital in Baghdad. Results: Out 38 isolates of Gram positive and Gram negative bacteria were obtained from urine specimens in a percentage of 5(13.2%) and 33(86.8%),respectively. The lowest incidence was among the 11-15 years old age group (11.9%) whereas the highest incidence was among the 1-5 years old age group (43.6%)(P≤0.05).Also out of 38positive cultures, the incidence was higher in females 31(81.6%)than that of males 7(18.4%). Out of 38 positive cultures, the isolation rate was 5(13.2%) for Gram positive isolates and 33(86.8%)for Gram negative isolates. The most frequently isolated bacteria was Escherichia coli19(50%)(P-value ≤ 0.05), while the only isolated Gram positive was Staphylococcus aureus5(42.86%) isolates.The most effective antibiotics for Staphylococcus aureus isolates were Vancomycin and Amikacinfor (100%) and for Gram negative isolates wasimipenem (100%). Ampicillin showed the highest resistance rate for both Gram positive and Gram negative isolates(100%) and Pesudomonas aeruginsa isolates showed the highest resistant rates to most antibiotics under study. Conclusions: The most frequently isolated bacteria was E. coli from all urine cultures and the most effective antibiotics for Staphylococcus aureus isolates were Vancomycin and Amikacinfor


2020 ◽  
Vol 13 (4) ◽  
pp. 1871-1878
Author(s):  
Rike Syahniar ◽  
Rayhana Rayhana ◽  
Dayu Swasti Kharisma ◽  
Muhammad Khatami ◽  
Dimas Bagus Bramasta Duarsa

BACKGROUND: The high infection of methicillin-resistant Staphylococcus aureus (MRSA) accompanied by increased resistance to many groups of antibiotics is a major concern in the field of infection. This study aims to evaluate the prevalence of MRSA isolates and antimicrobial susceptibility to MRSA isolates in Indonesia. METHODS: We did searches in Pubmed, Proquest, DOAJ, GARUDA, and google scholar for studies published in 2006-2020. Study in Indonesian (Bahasa) and English with the keywords "methicillin-resistant Staphylococcus aureus", "MRSA" and "Indonesia". More than 30 S.aureus isolates derived from human samples were included. RESULTS: A total of 738 articles based on the search results, 13 studies were included in this systematic review. The prevalence of MRSA reported from all studies is 0.3%-52%. The study with the largest prevalence of MRSA was found in Jakarta. The susceptibility of vancomycin antibiotics to MRSA isolates is known to range from 87%-100%. Based on all studies, Linezolid, Tigecycline, Nitrofurantoin, and quinupristin/dalfopristin were reported to have 100% susceptibility. CONCLUSIONS: The prevalence of MRSA is still found high in one of the cities in Indonesia. Surveillance of antibiotic use, monitoring of antimicrobial susceptibility patterns, and antibiotic resistance control programs need to be optimized. MRSA screening is based on a rapid diagnosis when an inpatient admission is also necessary.


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