scholarly journals Prevalence of Methicillin-Resistant Staphylococcus aureus in Shrines

2020 ◽  
Vol 2020 ◽  
pp. 1-10 ◽  
Author(s):  
Charu Arjyal ◽  
Jyoti KC ◽  
Shreya Neupane
Keyword(s):  
Staphylococcus Aureus ◽  
Research Work ◽  
High Rate ◽  
Diffusion Method ◽  
Resistant Bacteria ◽  
Human Beings ◽  
Antibiotic Resistant ◽  
Mannitol Salt Agar ◽  
Methicillin Resistant ◽  
Inducible Clindamycin Resistance

Methicillin-resistant Staphylococcus aureus (MRSA) infection in human beings and animals is concerning; it stands out as one of the leading agents causing nosocomial and community infections. Also, marginally increasing drug resistance in MRSA has limited therapeutic options. This study focuses on estimating the prevalence of MRSA in shrines, a place where human and animal interaction is frequent, sharing antibiotic-resistant bacteria, antibiotic-resistant genes, and diseases. A total of 120 environmental swabs were collected from targeted areas during the study period, March 2018 to May 2018. Staphylococcus aureus was identified by growth on mannitol salt agar (MSA), and MRSA by growth on mannitol salt agar containing 4 μg Oxacillin, Gram staining, and conventional biochemical test. Isolates of S. aureus were characterized by antibiotic susceptibility testing using the disc diffusion method. MRSA and methicillin-sensitive S. aureus (MSSA) proportion were 19% and 81%, respectively; a high rate of MRSA was observed in isolates from Thapathali (28.6%). MSSA isolates showed a high rate of resistance to erythromycin (64.7%). MRSA isolates were resistant to gentamicin (50%), cotrimoxazole (25%), erythromycin (50%), and ciprofloxacin (25%). The isolates were susceptible to linezolid (100%), clindamycin (100%), ciprofloxacin (75%), erythromycin (50%), tetracycline (100%), and cotrimoxazole (75%). Intermediate resistance was also found in gentamicin (50%). Of the 11 MSSA isolates that were erythromycin resistant and clindamycin sensitive, 6 (54.5%) showed the inducible clindamycin resistance (ICR) pattern and 2 MRSA isolates that were erythromycin resistant and clindamycin sensitive showed ICR pattern. Fifteen MSSA isolates were β-lactamase positive, whereas only two MRSA isolates showed β-lactamase production. There exists a minimal research work on infectious diseases that are shared between primates and animals. This study suggests the pervasiveness of MRSA/MSSA in the shrines, which may be a primary place for pathogen exchange between humans and primates.

scholarly journals Methicillin Resistant Staphylococcus aureus Isolated from Wound Infections

2018 ◽  
Vol 5 ◽  
pp. 19-24
Author(s):  
Jyoti Shrestha ◽  
Krishan Govinda Prajapati ◽  
Om Prakash Panta ◽  
Pramod Poudel ◽  
Santosh Khanal
Keyword(s):  
Staphylococcus Aureus ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Inhibition Zone ◽  
High Rate ◽  
Diffusion Method ◽  
Resistance Pattern ◽  
Wound Infections ◽  
Mannitol Salt Agar ◽  
Methicillin Resistant ◽  
Antibiotic Susceptibility Test

Objectives: The aim of this study was to determine the prevalence of methicillin resistant Staphylococcus aureus (MRSA) and antibiotic resistance pattern of the isolates from wound infections. Methods: A total of 706 wound specimens including pus and wound swab were analyzed in the laboratory of B and B Hospital, Lalitpur from May to October 2014. The specimens were cultured on Blood Agar and Mannitol Salt Agar plates and incubated at 37°C for 24 hours. Antibiotic susceptibility test was performed by modified Kirby-Bauer disc diffusion method. Strains resistant to cefoxitin (30mcg) with inhibition zone ≤ 21mm were identified as MRSA. Results: Out of 366 bacterial isolates, 90 (24.6%) were S. aureus and among them 16.7% were MRSA and 54.4% multi-drug resistant (MDR). All isolates were sensitive to vancomycin and most of the isolates were sensitive to cefoxitin (83.3%). High rate of resistance was observed towards penicillin (98.9%) and ampicillin (86.7%). All MRSA isolates and 52.9% of methicillin sensitive S. aureus (MSSA) were MDR. Conclusion: MRSA incidence is increasing in the population, and therapeutic measures are few and accompanied by diverse side effects. It is noteworthy to state that vancomycin is still the first line drug although vancomycin-resistant strains have been reported.

scholarly journals Predominance of PVL-negative community-associated methicillin-resistant Staphylococcus aureus sequence type 8 in newly diagnosed HIV-infected adults, Tanzania

2021 ◽  
Author(s):  
Joel Manyahi ◽  
Sabrina J. Moyo ◽  
Said Aboud ◽  
Nina Langeland ◽  
Bjørn Blomberg
Keyword(s):  
Staphylococcus Aureus ◽  
Hiv Infection ◽  
Diffusion Method ◽  
Molecular Characteristics ◽  
People Living With Hiv ◽  
Newly Diagnosed ◽  
Beta Lactam ◽  
Disk Diffusion Method ◽  
Methicillin Resistant ◽  
Inducible Clindamycin Resistance

AbstractDifficult-to-treat infections caused by methicillin-resistant Staphylococcus aureus (MRSA) are of concern in people living with HIV infection as they are more vulnerable to infection. We aimed to identify molecular characteristics of MRSA colonizing newly diagnosed HIV-infected adults in Tanzania. Individuals newly diagnosed with HIV infection were recruited in Dar es Salaam, Tanzania, from April 2017 to May 2018, as part of the randomized clinical trial CoTrimResist (ClinicalTrials.gov identifier: NCT03087890). Nasal/nasopharyngeal isolates of Staphylococcus aureus were susceptibility tested by disk diffusion method, and cefoxitin-resistant isolates were characterized by short-reads whole genome sequencing. Four percent (22/537) of patients carried MRSA in the nose/nasopharynx. MRSA isolates were frequently resistant towards gentamicin (95%), ciprofloxacin (91%), and erythromycin (82%) but less often towards trimethoprim-sulfamethoxazole (9%). Seventy-three percent had inducible clindamycin resistance. Erythromycin-resistant isolates harbored ermC (15/18) and LmrS (3/18) resistance genes. Ciprofloxacin resistance was mediated by mutations of the quinolone resistance-determining region (QRDR) sequence in the gyrA (S84L) and parC (S80Y) genes. All isolates belonged to the CC8 and ST8-SCCmecIV MRSA clone. Ninety-five percent of the MRSA isolates were spa-type t1476, and one exhibited spa-type t064. All isolates were negative for Panton-Valentine leucocidin (PVL) and arginine catabolic mobile element (ACME) type 1. All ST8-SCCmecIV-spa-t1476 MRSA clones from Tanzania were unrelated to the globally successful USA300 clone. Carriage of ST8 MRSA (non-USA300) was common among newly diagnosed HIV-infected adults in Tanzania. Frequent co-resistance to non-beta lactam antibiotics limits therapeutic options when infection occurs.

scholarly journals Detection of Methicillin Resistant Staphylococcus aureus in Dairy Products and Anterior Nares of Dairy Workers

2019 ◽  
Vol 6 ◽  
pp. 59-62
Author(s):  
Ranjana K.C. ◽  
Ganga Timilsina ◽  
Anjana Singh ◽  
Supriya Sharma
Keyword(s):  
Staphylococcus Aureus ◽  
Antibiotic Susceptibility ◽  
Dairy Products ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Dairy Product ◽  
Control Measures ◽  
Diffusion Method ◽  
Mannitol Salt Agar ◽  
Methicillin Resistant ◽  
Dairy Workers

Objectives: To isolate methicillin resistant Staphylococcus aureus (MRSA) from anterior nares of dairy workers and dairy products and assess the antibiotic susceptibility pattern of the isolates. Methods: Swab samples collected from anterior nares of dairy workers and dairy product (butter) were inoculated into mannitol salt agar and incubated at 37ºC for 24 hours. Identification was done based on colony characteristics, Gram's staining, catalase, oxidase and coagulase test. Antibiotic susceptibility testing was done by modified Kirby Bauer disc diffusion method. MRSA was confirmed by using cefoxitin disc. Results: A total of 109 S. aureus (98 from dairy workers and 11 from butter samples) were isolated. Out of them 32 MRSA were isolated from dairy workers and 4 from butter samples. The association between age group and MRSA was found insignificant (p = 0.115). The association of MRSA between male and female workers was found significant (>0.05). About 86% of the MRSA isolates were susceptible to Gentamicin (86.11%) followed by Ciprofloxacin (77.78%). Conclusion: Detection of MRSA among dairy workers and dairy products warrants proper handling and adequate control measures to prevent transmission of MRSA from dairy industry.

The impact of methicillin-resistant Staphylococcus aureus on ENT practice

2006 ◽  
Vol 120 (9) ◽  
pp. 713-717 ◽  
Author(s):  
I J Nixon ◽  
B J G Bingham
Keyword(s):  
Staphylococcus Aureus ◽  
Infection Control ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Methicillin Resistance ◽  
Resistant Bacteria ◽  
Antibiotic Resistant Bacteria ◽  
Antibiotic Resistant ◽  
Methicillin Resistant ◽  
The Impact

Antibiotic-resistant bacteria are increasingly common and present a major problem for the modern day ENT surgeon. This article reviews the development of methicillin resistance in Staphylococcus aureus and how it has come to affect ENT practice. We look at the evidence behind measures taken to help deal with methicillin-resistant Staphylococcus aureus (MRSA) and to prevent its spread. We go on to suggest a departmental guideline for infection control, which we hope can be implemented to help deal with the problems created by MRSA.

scholarly journals Phenotypic study of Macrolide-Lincosamide-Streptogramin B Resistance in Staphylococcus aureus and their relationship with Methicillin-Resistant Staphylococcus aureus (MRSA) at Tertiary Care in Eastern Nepal

2016 ◽  
Vol 5 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Ganesh Kumar Singh ◽  
Bigu Kumar Chaudhari ◽  
Kamal Prasad Parajuli
Keyword(s):  
Staphylococcus Aureus ◽  
Antimicrobial Agents ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Tertiary Care ◽  
Diffusion Method ◽  
Clinical Samples ◽  
Methicillin Resistant ◽  
Inducible Clindamycin Resistance ◽  
Constitutive Resistance ◽  
Antibiotic Susceptibility Test

Background Resistance to antimicrobial agents is prevalent among Staphylococci. This has led to wide uses of macrolide-lincosamide-streptogramin B (MLSB) antibiotics to Staphylococcus aureus (S. aureus) infections. MLSB though chemically distinct, have similar target site and mode of action. The multiple mechanisms are responsible for resistance to MLSB antibiotics which can lead to clinical failure. The aim of the study was to investigate the frequency of inducible and constitutive clindamycin resistance among clinical isolates of S. aureus and their relationship with Methicillin-resistant Staphylococcus aureus (MRSA).Material & Methods A total of 336 unique Staphylococcus aureus isolates from different clinical samples obtained from patients were studied. Antibiotic susceptibility test was performed by Kirby- Bauer disc diffusion method. “D test” was performed to detect inducible clindamycin resistance as per CLSI guidelines. MRSA was detected using Cefoxitin (30μg) and results were interpreted according to CLSI criteria.Results Inducible clindamycin resistance was seen in 45 (13.39%), constitutive clindamycin resistance was seen among 58 (17.26%) while MS phenotype was observed among 38(11.30%) of isolates. Inducible resistance as well as constitutive resistance was higher among MRSA as compared to MSSA (21.11%, 4.48% and 21.11%, 12.82%respectively).Conclusion The Successful use of clindamycin for the treatment of infection caused by S. aureus can be predicted based on the result of simple and inexpensive D test.Journal of Nobel Medical CollegeVolume 5, Number 1, Issue 8, January-July 2016, 1-5

scholarly journals Prevalence of inducible clindamycin resistance in methicillin-resistant Staphylococcus aureus: the first study in Jordan

2017 ◽  
Vol 11 (04) ◽  
pp. 350-354 ◽  
Author(s):  
Dua’a Jarajreh ◽  
Amin Aqel ◽  
Hamed Alzoubi ◽  
Wael Al-Zereini
Keyword(s):  
Staphylococcus Aureus ◽  
Polymerase Chain Reaction ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
High Rate ◽  
Chain Reaction ◽  
Methicillin Resistant ◽  
Inducible Clindamycin Resistance ◽  
Standard Procedures ◽  
Polymerase Chain

Introduction: A high rate of infections with methicillin-resistant Staphylococcus aureus (MRSA) has been documented, in both hospital- (HA-MRSA) and community-acquired (CA-MRSA) diseases in Jordan. Erythromycin and clindamycin are considered treatments of choice. However, resistance to erythromycin with false susceptibility to clindamycin in vitro may lead to therapeutic failure. Hence, it is mandatory to study the prevalence of inducible resistance to macrolide-lincosamide-streptogramin B (iMLSB) antibiotics conferred by erm genes in those bacteria. Methodology: S. aureus isolates were identified morphologically and biochemically, and MRSA were appraised using standard procedures. Induction in resistance to MLSB antibiotics among MRSA isolates was detected phenotypically using the D-test, and the presence of erm genes was revealed by polymerase chain reaction (PCR). Results: Of 126 collected Staphylococcus isolates, 71 (56.3%) isolates were S. aureus, of which 55 (77.5%) were MRSA. A total of 43 (78.2%) MRSA-discordant isolates were resistant to erythromycin, of which 33 (76.7%) exhibited the iMLSB (D-test positive), 2 (4.7%) the MSB (D-test negative), and 8 (18.6%) the constitutive resistant (cMLSB) phenotypes. Induction of clindamycin resistance was 1.6 times greater in CA-MRSA than in HA-MRSA. Furthermore, ermA and ermC were significantly prevalent in HA-MRSA and CA-MRSA, respectively. Conclusions: Continuous surveillance of the MLSB resistance is important and required before the prescription of clindamycin to treat MRSA infections.

scholarly journals Antibiotics Susceptibility Pattern of Bacteria Isolated from Ready-To-Eat Vegetables Sold in Mohammadu Gumi Market, Kaduna, Nigeria

2021 ◽  
Vol 16 (2) ◽  
pp. 131-137
Author(s):  
A.F. Obajuluwa ◽  
A. Kefas ◽  
S.K. Parom
Keyword(s):  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antimicrobial Susceptibility ◽  
Diffusion Method ◽  
Resistance Pattern ◽  
Resistant Bacteria ◽  
Antibiotics Resistance ◽  
Salmonella Spp ◽  
Methicillin Resistant ◽  
Agar Disc

Background: Freshly consumed vegetables are considered to have more nutritional value than cooked ones. However, they are a potential source of foodborne illnesses due to possible microbial contamination, this poses safety threat.Objectives: This study was carried out to determine the bacteriological quality of ready-to-eat vegetables sold in Mohammadu Gumi market, Kaduna and to determine the antibiotics resistance pattern of the bacteria isolates.Methods: A total of 40 samples of cabbage were collected. Gram staining, growth on selective media and biochemical tests were carried out to identify the isolates. Antimicrobial susceptibility testing was done using the Kirby-Bauer agar disc diffusion method. Methicillin resistant Staphylococcus aureus isolates were detected with the use of cefoxitin disc agar diffusion test.Results: A total of 46 bacteria isolates were obtained with a total colony count range from 4 – 9 x 106CFU/ml. The following bacteria were isolated:   aureus (41.3%), Escherichia coli (28.3%), Salmonella spp (19.6%),  Pseudomonas aeruginosa (8.7%) and Serratia spp (2.2%). The result of antimicrobial susceptibility test showed thatthe isolates were highly susceptible to ofloxacin: Staphylococcus aureus, Pseudomonas aeruginosa, Serratia spp (100%), E. coli (92.3%) and Salmonella spp (87.5%). The isolates were all resistant to penicillin and ampicillin while 89.5% of the Staphylococcus aureus isolates were phenotypically methicillin resistant Staphylococcus aureus.Conclusion: This study showed that the vegetables (cabbage) were highly contaminated with antibiotic resistant bacteria, this can be a source of infection to the consumers and a potential means of transmitting multidrug resistant bacteria strains in the community.

scholarly journals Profile of antibiotic-resistant and presence of methicillin-resistant Staphylococcus aureus from nasal swab of dogs from several animal clinics in Surabaya, Indonesia

2020 ◽  
Vol 6 (1) ◽  
pp. 90-94
Author(s):  
Vega Decline ◽  
Mustofa Helmi Effendi ◽  
Reina Puspita Rahmaniar ◽  
Sheila Marty Yanestria ◽  
Nenny Harijani
Keyword(s):  
Staphylococcus Aureus ◽  
Antibiotic Resistance ◽  
Nasal Swab ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Antibiotic Sensitivity ◽  
Diffusion Method ◽  
Disk Diffusion Method ◽  
Antibiotic Resistant ◽  
Methicillin Resistant ◽  
Oxacillin Resistance

Aim: The research was to investigate the antibiotic resistance profile and to screen for methicillin-resistant Staphylococcus aureus (MRSA) from nasal mucosa swab of dogs. Materials and Methods: The samples were collected from three pet clinics, three K9 units, one veterinary teaching hospital, and one kennel in Surabaya. Of the 50 total samples, 24 confirmed S. aureus strains, which were used for antibiotic sensitivity tests using a disk diffusion method and screening of MRSA used oxacillin resistance screening for base (ORSAB). Results: This study showed that there were differences in antibiotic resistance patterns among different locations. Fourteen isolates were screened for MRSA by culture on ORSAB. Conclusion: MRSA carriage was found on nasal swab of dogs, and dogs can act as reservoir of MRSA for spreading to human health. Keywords: antibiotic-resistant, dogs, methicillin-resistant Staphylococcus aureus, Staphylococcus aureus.

scholarly journals PREVALENCE OF INDUCIBLE CLINDAMYCIN RESISTANCE IN CLINICAL ISOLATES OF METHICILLIN-RESISTANT STAPHYLOCOCCUS AUREUS MEDIATED THROUGH GENE ERMC EXPRESSION

2018 ◽  
Vol 11 (9) ◽  
pp. 106
Author(s):  
Nimisha Tandon ◽  
Madhuri Kulkarni ◽  
Sowmya Gs ◽  
Fauzia Tabassum ◽  
Sayeed Akhtar Md
Keyword(s):  
Staphylococcus Aureus ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Good Alternative ◽  
Clinical Isolates ◽  
University Teaching ◽  
Diffusion Method ◽  
Disc Diffusion ◽  
Cross Sectional ◽  
Methicillin Resistant ◽  
Inducible Clindamycin Resistance

Objective: The objective of this study is to determine the phenotypic and genotypic expression of inducible clindamycin resistance due to the expression of ermA, ermB, and ermC genes in clinical isolates of methicillin-resistant Staphylococcus aureus (MRSA) by double disc diffusion and uniplex PCR.Method: This cross-sectional study was conducted in microbiology department of an university teaching hospital. A total of 604 non-duplicate clinical isolates of S. aureus evaluated for MRSA and were subjected to uniplex PCR for ermA, ermB, and ermC genes, respectively.Result: The analysis of 604 isolates showed that 220 (36.42%) were of MRSA. Out of which, 69 (11.42%) were demonstrated as inducible clindamycin resistance by double-disc diffusion method, and among inducible resistant isolates, 25 isolates of ermC (84%) were positive and 4 (16%) were negative, whereas, ermA and ermB genes could not be demonstrated by the genotypic method.Conclusion: We observed that clindamycin may serve as a good alternative and advocated in severe MRSA infection based on susceptibility pattern. We observed D test as a mandatory method to detect inducible clindamycin Staphylococcus. Importantly, ermC gene is a major determinant of resistance to macrolides among MRSA.

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