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Purpose: To report on the microbiological profile and antibiotic sensitivity patterns of infectious keratitis at a tertiary center in central India. Methods: The suspected case of severe keratitis underwent microbiological culture and identification using the VITEK 2 technique. Antibiotic susceptibility for different sensitivity and resistance patterns was analyzed. Demographics, clinical profile, and socioeconomic history was also documented. Results: Culture was positive in 233/455 (51.2%) patients. Pure bacterial growth was present in 83 (35.62%) patients and pure fungus was present in 146 (62.66%) patients. The most common bacterial cause of infectious keratitis was Pseudomonas followed by Staphylococcus and Bacillus. Pseudomonas showed 65%–75% resistance against levofloxacin, ceftazidime, imipenem, gentamycin, ciprofloxacin, and amikacin. Staphylococcus showed 65%–70% resistance against levofloxacin, erythromycin, and ciprofloxacin, with Streptococcus being 100% resistant to erythromycin. Conclusion: This study highlights the current trend of microbiological profiles of infectious keratitis and their antibiotic susceptibility at a rural setup in central India. Fungal predominance and increased resistance against the commonly used antibiotics were noted.
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Background & Objectives: This study was aimed to observe the susceptibility pattern of bacterial isolates from respiratory tract infection (RTI). Respiratory tract infection is considered as one of the major public health problems and a leading cause of morbidity and mortality in many developing countries. Respiratory tract is the part of the human system that plays a vital role in breathing processes. In human, the respiratory system can be subdivided into an Upper respiratory tract and a Lower respiratory tract based on anatomical features. The respiratory tract is constantly exposed to microbes due to the extensive surface area. The present study was conducted retrospectively for a periodMethods: of one year November 2021 to October 2022. All respiratory specimens included Sputum, BAL, throat swab; endotracheal aspirate specimens were collected aseptically from patients and cultured on the appropriate bacteriological media (Blood agar, MacConkey agar & Chocolate Agar). Bacterial isolates were identified by biochemical tests and antimicrobial susceptibility performed by standard methods as per CLSI 2022. 152Results: (72.3%) of total 210 samples were positive for bacterial culture. 126 (82.8%) were gram negative bacilli (GNB) and 26 (17.1%) were gram positive cocci (GPC). The predominant pathogen isolated was K. pneumoniae 46 (30.2%) followed by Escherichia coli 28 (18.4%).The overall susceptibility of GNB was highest towards Imipenem, Meropenem followed by Piperacillin tazobactam and Amikacin. Gram positive organisms exhibited highest susceptibility towards Vancomycin and Linezolid. Imipenem is the most sensitive antibiotic followed by Piperacillin tazobactamConclusion: and Amikacin which can be used for empirical therapy for respiratory tract infections (RTI). The antibiotic therapy should be modified as per the culture and sensitivity report. Regular determinations of the type of bacterial pathogens and updation of antibiogram must be followed in every institution to aid in better patient management by helping the clinician in the judicious use of antibiotics.
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Background: Neonatal sepsis refers to an infection involving bloodstream in newborn infants <28 days old. Neonatal sepsis contributes substantially to neonatal morbidity and mortality and is an ongoing major global public health challenge. Aim and Objectives: The objectives of this study were to study bacteriological profile and antibiotic susceptibility of blood culture from neonates in GMERS Medical College, Gandhinagar. Materials and Methods: For culture and antimicrobial susceptibility test, blood samples were taken from the suspected cases admitted in NICU. Total 271 blood culture positive NICU admitted patient with septicemia were taken in this study. Results: Total 271 septicemic neonates having blood culture positive septicemia, neonatal septicemia was predominantly caused by Gram-negative organism Klebsiella pneumoniae (40.60%). Among the all Gram-negative organisms, Piperacillin/Tazobactam was most sensitive drug followed by Meropenem. Moreover, for the all Gram-positive organism, vancomycin and linezolid were the most sensitive drugs. Conclusion: Neonatal septicemia is major cause of morbidity and mortality in India. Multiple antibiotic resistance among the isolates worsen the condition more. A high level of suspicions is needed on clinical ground for diagnosis. Judicious use of antibiotics should be promoted.
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Background: The emergence of Methicillin-resistant Staphylococcus aureus (MRSA) has posed a serious therapeutic challenge. It is responsible for a wide range of infections including superficial skin infections, food poisoning, osteomyelitis and septicemia. Aim of this study was to identify and to determine antibiotic susceptibility pattern of Staphylococcus aureus from various clinical samples. Materials and methods: Different clinical specimens were collected and processed for routine culture and antibiotic sensitivity test by standard microbiology techniques. Results: A total of 129 S. aureus strains were isolated from various clinical specimens out of which 84 (65.12%) were Methicillin Resistance Staphylococcus aureus (MRSA). 66(51.16%) S. aureus were obtained from indoor (IPD) patients. S. aureus was found higher in male than female. S. aureus was found highly resistant to Benzylpenicillin (94.57%) followed by ciprofloxacin (77.51%), Erythromycin (61.24%), and Cotrimoxazole (51.94%), Clindamycin (44.19%), and Gentamicin (17.05%). 1 (0.78%) of the isolates were resistance to Vancomycin and Linezolid. For urine isolates Nitrofurantoin was drug of choice. Conclusion: Methicillin resistant Staphylococcus aureus was found 65.12% of Staphylococcus aureus isolates. It was most common in males and hospitalized patients. Teicoplanin or Tigecyline seems to be drug of choice followed by Vancomycin, Linezolid, Tetracycline and Gentamicin. It would be helpful to formulating and monitoring the antibiotic policy and ensure proper empiric treatment.
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AIM: To investigate the bacterial flora and antibiotic susceptibility testing of conjunctival sac in adolescents after wearing orthokeratology(OK)lens.METHODS:A total of 101 adolescents aged 8 to 14 who admitted to outpatient department of Xi'an No.1 Hospital from September 2021 to August 2022 were recruited in this cross-sectional observational study. There were 51 cases wearing OK Lens(wearing group)and 50 patients not wearing contact lens(non-lens group), the right eye of all patients was selected into the group. The culture of bacterial flora in conjunctival sac between the two groups were compared, the species were identified by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, and the antibiotic susceptibility testing was carried out for the positive strains cultured in the wearing group.RESULTS:The positive rate of conjunctival sac bacterial cultured in the wearing group and the non-lens group was 68.6%(35/51)and 60.0%(30/50), respectively(P>0.05). In both groups, the bacteria with the highest detection rate were staphylococcus epidermidis and staphylococcus aureus. The sensitivity rates of the strains detected in the wearing group to drugs are as follows: Levofloxacin(98%), Moxifloxacin(98%), Gatifloxacin(98%), Cefuroxime(98%), Cefathiamidine(98%), Rifampicin(98%), Chloramphenicol(96%), Cefoxitin(95%), Clindamycin(80%), Gentamicin(74%), Fusidic acid(72%), Tobramycin(64%), Compound sulfamethoxazole(26%), Mezlocillin(10%), Azithromycin(6%), of which the sensitivity rate of Gram-positive cocci was 100% sensitive to Vancomycin.CONCLUSION:Gram-positive cocci are the main bacteria isolated from conjunctival sac of adolescents after wearing OK Lens. Wearing OK Lens will not significantly increase the positive rate of conjunctival sac bacterial flora. Results of antibiotic susceptibility testing may provide guidance for empirical medication in patients wearing OK lens after eye infection.
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Aims: To identify predominant microorganisms in dish washing scrubbers collected from ten different sources. Study Design: Collection of dish wash scrubbers from different sources, pour plating of appropriately prepared dish wash scrub suspensions and subsequent isolation and identification of predominant isolates. Assessment of antibiotic susceptibility of the selected isolates by disc diffusion assay. Place and Duration of Study: April, 2018 - June 2018. Methodology: A total of 10 dish wash scrubbers (synthetic green scrubber pads free from any anti-bacterial preservatives belonging to the same brand) were collected from various sources. Appropriately prepared dish wash scrub suspensions in peptone water were pour plated on Plate Count Agar (PCA) and MacConkey agar. Predominant colonies selected from the plates based on the colony morphology were subjected to Grams staining, catalase, oxidase, indole, citrate, urease tests and genotypic identification by 16S ribosomal RNA sequencing. The identified isolates were tested for their susceptibility to eight antibiotics by disc diffusion method. Results: Irrespective of the sample source, most of the dish wash scrubbers sampled harbored similar types of colonies. From the colonies obtained two of them were identified by 16S rRNA sequencing and subsequent blasting as Klebsiella pneumoniae and Acinetobacter radioresistens. The isolates were deposited in the NCBI database with accession numbers MK032217 (Klebsiella pneumoniae RSV02) and MK032134 (Acinetobacter radioresistens RSV 01). These isolates were tested for their susceptibility to different antibiotics and Acinetobacter radioresistens RSV 01 was found to be more antibiotic susceptible than Klebsiella pneumoniae RSV02. Conclusion: Observations of this study confirm the potential role of dish wash scrubbers as vehicle for potential pathogens and their ability to act as cross contaminating agents in food processing environments.
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@#Some of Vibrio species is well known as pathogenic bacteria in aquaculture and the marine industry. Its infection is able to generate a massive outbreak and affect the fish population, especially for net caged fish such as seabass. This study was conducted to investigate the prevalence of Vibrio spp. isolated from seabass (Lates calcarifer) in Sri Tujuh Lagoon, Tumpat, Kelantan. Then, to determine the antibiotic resistance in Vibrio isolates. Polymerase chain reaction (PCR) was used to detect Vibrio species using specific primer VR169 and VR744 with estimation base pair size band, 597 bp and further identified by sequencing. On the other hand, antibiotic susceptibility tests were continued by using 13 types of antibiotics; kanamycin (K30), chloramphenicol (C30), neomycin (N10), ampicillin (AMP10), nitrofurantoin (F300), tetracycline (TE30), streptomycin (S10), norfloxacin (NOR10), ciprofloxacin (CIP5), nalidixic acid (NA30), gentamicin (CN10), doxycycline (DO30) and sulfamethoxazole (SXT100). As a result, 14 Vibrio isolates were identified, including Vibrio fluvialis (n=6), Vibrio parahaemolyticus (n=3), Vibrio harveyi (n=2) and each isolate for Vibrio vulnificus, Vibrio alginolyticus and Vibrio spp. The results showed that all isolates were sensitive to most antibiotics except ampicillin, neomycin and streptomycin. The MAR index value was ranging from 0 to 0.31. This study demonstrates the prevalence of Vibrio spp. in seabass and the report on multidrug resistance strains that could be of concern to the fish farmers. In addition, data from this study can be further used in fish disease management plans.
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Objective:To identify a pathogenic strain JM-1 isolated from the pus of a patient stabbed by a sea shrimp and to analyze its antibiotic susceptibility and virulence genes, aiming to provide reference for screening clinically related infections caused by Cysteiniphilum litorale as a rare pathogen and improving prognosis. Methods:Biochemical phenotype identification, matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS), 16S rRNA gene sequencing, analysis of average nucleotide identity (ANI) and average amino acid identity (AAI) based on the whole genome and phylogenetic analysis of the 16S rRNA gene and the whole genome were performed to accurately determine the taxonomic status of the strain JM-1. E-test was used to detect antibiotic susceptibility, and the results were interpreted according to the interpretation standards of Francisella tularensis in CLSI M45-A3. The virulence factor database (VFDB) was used for genome-wide annotation and analysis of virulence genes. Results:After culturing the strain JM-1 on the Columbia blood plate for 3 d, some grey-white, medium-sized, smooth, round and convex hemolytic colonies were observed. Gram staining result showed lightly colored Gram-negative Coccobacillus. API NH identification results suggested that the isolate JM-1 was Moraxella catarrhalis (biochemical code: 3010), while there was no identification result in Vitek2 system NH card (biochemical code: 0211002121). The EXS3000 mass spectrometer self-built database identified the isolate JM-1 as Cysteiniphilum litorale. The phylogenetic analysis based on the 16S rRNA gene and the whole genome showed that the isolate JM-1 and Cysteiniphilum litorale DSM 101832 T clustered into the same branch, and the ANI and AAI values between the two strains were 95.07% and 95.65%, respectively. The biochemical phenotype identification indicated the isolate JM-1 producing β-lactamase and penicillinase. Antibiotic susceptibility test results showed the strain was resistant to penicillin and sensitive to gentamicin, streptomycin, doxycycline, tetracycline, ciprofloxacin, levofloxacin, and chloramphenicol. Genome annotation suggested the virulence genes of the isolate JM-1 were similar to those of Francisella, including Francisella pathogenicity island (FPI), type Ⅳ fimbriae, capsule and lipopolysaccharide. Conclusions:Cysteiniphilum litorale was a rare pathogen with virulence genes similar to those of Francisella, and its antibiotic susceptibility was also similar to that of Francisella. This study confirmed a case of clinical infection caused by Cysteiniphilum litorale. The self-built MALDI-TOF MS system could be used for its rapid identification.
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Abstract The exponential rise in the Nigerian population has necessitated the use of agrochemicals for enhanced agricultural yields to meet the ever-rising demand for food. However, agrochemicals such as organochlorine pesticides (OCPs) have caused several devastating health and ecological challenges. The study was therefore aimed at assessing the bioaccumulation of OCPs and the associated parasitological and microbial susceptibility in P. obscura to determine the possible ecological impacts of the chemical. A total of 106 specimens of Parachanna obscura fish species were sampled between July and November 2019 from Lekki Lagoon in Lagos, Nigeria. Four culture media, namely nutrient agar (NA), MacConkay agar (MCA), eosin methylene blue (EMB), and sabouraud dextrose agar (SDA) were employed in microbial culture. These microbes were subjected to ceftazidime, ceftriaxone, cefuroxime, gentamicin, ofloxacin, augmentin, nitrofurantoin, ciprofloxacin, and erythromycin to test for resistance, susceptibility and intermediate statuses before and after curing. OCPs were tested in the water, sediment, and tissues of P. obscura using gas chromatography flame ionization detector (GC-FID). P. obscura sampled in the lagoon had poor growth exponent which was characterized by negative allometry (slenderness) in the sampled fish. Although the incidence of parasitic infection in the fish was not alarming, the situation might be aggravated if the prevalent anthropogenic activities persist, resulting in immunosuppression. Regulation of anthropogenic activities in the catchment area is recommended to forestall the prognosis of health and environmental hazards associated with the agricultural, industrial, pharmaceutical, and municipal activities around the lagoon. Bacteria that conferred the most resistance to the majority of the antibiotics were Staphylococcus sp., Micrococcus sp. Escherichia coli and Klebsiella sp., testing positive to plasmid profile. They conferred high resistance to the antibiotics before plasmid curing but became highly susceptible post- plasmid curing. This implies that the gene for resistance in the bacteria isolates was plasmid-mediated, that is, they were obtained from the environment. In the event of an outbreak of waterborne diseases such as cholera, typhoid, dysentery, and diarrhea, there may be non-response to treatment among the infected inhabitants. The incidence of antibiotic resistance in bacteria colonies recorded in this study is of great public health concern, given the possibility of the antibiotic-resistant bacteria strains being passed to humans through fish consumption, resulting in increased multi-drug resistance in humans. Regulation of anthropogenic activities around the lagoon is recommended to forestall prognosis of health and environmental hazards associated with OCPs from agricultural, industrial, pharmaceutical, and municipal sources.
Resumo O aumento exponencial da população nigeriana exigiu o uso de agroquímicos para aumentar a produção agrícola e, assim, atender à crescente demanda por alimentos. No entanto, agroquímicos como pesticidas organoclorados (OCPs) causaram vários problemas de saúde e ecológicos. Portanto, o estudo teve como objetivo avaliar a bioacumulação de OCPs e a suscetibilidade parasitológica e microbiana associada em Parachanna obscura, a fim de determinar os possíveis impactos ecológicos desse produto químico. Foi amostrado um total de 106 espécimes de P. obscura entre julho e novembro de 2019 da lagoa Lekki, em Lagos, Nigéria. Quatro meios de cultura, como o ágar nutritivo (NA), o ágar MacConkay (MCA), o ágar eosina azul de metileno (EMB) e o ágar sabouraud dextrose (SDA), foram empregados na cultura microbiana. Esses micróbios foram submetidos a ceftazidima, ceftriaxona, cefuroxima, gentamicina, ofloxacina, augmentin, nitrofurantoína, ciprofloxacina e eritromicina para testar resistência, suscetibilidade e status intermediário antes e depois da cura. Os OCPs foram testados na água, sedimentos e tecidos de P. obscura usando um detector de ionização de chama por cromatografia em fase gasosa (GC-FID). Os peixes amostrados de P. obscura da lagoa apresentaram um expoente de crescimento ruim, caracterizado por alometria negativa (esbelteza). Embora a incidência de infecção parasitária nos peixes não tenha sido alarmante, a situação pode ser agravada se as atividades antropogênicas prevalecentes persistirem, resultando em imunossupressão. Recomenda-se a regulamentação de atividades antropogênicas na área de captação para prevenir o prognóstico de riscos à saúde e ecológicos associados a atividades agrícolas, industriais, farmacêuticas e municipais ao redor da lagoa. As bactérias que conferiram maior resistência à maioria dos antibióticos foram Staphylococcus sp., Micrococcus sp., Escherichia coli e Klebsiella sp., com teste positivo para o perfil plasmidial. Elas conferiram alta resistência aos antibióticos antes da cura do plasmídeo, mas se tornaram altamente suscetíveis após a cura dele. Isso implica que o gene de resistência nos isolados de bactérias foi mediado por plasmídeo, ou seja, foi obtido do ambiente. No caso de surtos de doenças transmitidas pela água, como cólera, febre tifoide, disenteria e diarreia, pode haver não resposta ao tratamento entre os habitantes infectados. A incidência de resistência a antibióticos nas colônias de bactérias registradas neste estudo é de grande preocupação para a saúde pública, dada a possibilidade de que as cepas de bactérias resistentes a antibióticos sejam transmitidas aos seres humanos por meio do consumo de peixes, resultando em maior resistência a múltiplas drogas em seres humanos. Recomenda-se a regulamentação de atividades antropogênicas ao redor da lagoa para impedir o prognóstico de riscos à saúde e ecológicos associados aos OCPs de fontes agrícolas, industriais, farmacêuticas e municipais.
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Humans , Animals , Pesticides , Bioaccumulation , Microbial Sensitivity Tests , Escherichia coli , Anti-Bacterial Agents , NigeriaABSTRACT
Aims:A wide variety of aerobic and anaerobic bacteria either singly or in combination has been implicated in pyogenic wound infection and this has been associated with treatment failures due to antibiotic resistance. This study aims at investigating the agentsof pyogenic wound infection and their antibiotic susceptibility.Study Design:A descriptive cross-sectional study conducted at the only tertiary Teaching Hospital in Uyo, Nigeria and carried out on 136 wound samples.Place and Duration of Study: University of Uyo Teaching Hospital, Uyo, Nigeria,between April and October, 2018.Methodology: Aspirated pus or wound swab samples were collected and inoculated on two separate agar plates containing 25% Sheep Blood and incubated aerobically and anaerobically at 37°C for 48 –72 hours. Identification of isolates was performed following standard procedures. Data obtained were analyzed using SPSS software. Results:Of the 136 collected wound samples from 76 (55.9%) males and 60 (44.1%) females patients fromages 20 to 70 years and above, 127 (93.4%) had growth of different bacterial isolates totaling 214 in number. Among these were aerobes 132 (61.6%) anaerobes 82 (38.4%). The Gram-negative aerobes had the highest prevalence 81 (37.9%), while the Gram-positive anaerobes 20 (9.4%) was the least prevalent. Staphylococcus aureus,44 (86.3%) and Pseudomonas aeruginosa, 24 (29.6%), were the predominant Gram-positive and Gram-negative aerobes respectively. Peptococci spp. 8 (40%) andBacteriodes fragilis28 (54.9%)were the predominant Gram-positive and Gram-negative anaerobes respectively.Some rarely reported pathogens revealed include Acinetobacter iwoffi, Enterobacter cloacaeand Stenotrophomonas maltophilia1(1.2%) and they showed 100% resistance to all tested antibiotics. The majority of the Gram-positive aerobes 29 (56.9%) were Vancomycin resistant and there was also an increasing prevalence of Methicillin resistant Staphylococcus aureus(45%).Conclusion:The bacterial agents causing pyogenic wound infection in Uyo comprised of 61.6% aerobes and 38.4% anaerobes. Some rarely reported bacteria such as Enterobacter cloacaeand A. iwofiiimplicated in the infections were resistant to all commonly used antibiotics including Imipenem, a reserved antibiotic. Staphylococcus aureuswas the commonest cause of pyogenic wound infection and up to 45% of them were Methicillin resistant.
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Background: Diabetic foot ulcer is one of the major surgical problem leading to hospital admission. Diabetic foot ulcer patients with uncontrolled diabetes may end up in forefoot amputation. Early aggressive debridement, control of blood sugar and empirical antibiotic therapy would reduce the morbidities in patients with diabetic foot ulcer. Further the knowledge of commonly isolated microbes and their antibiotic sensitivity pattern would be helpful to start empirical therapy. The purpose of this study was to determine the microbiological profile of diabetic foot infections (DFIs) and assess the antibiotic susceptibility of the causative agents.Methods: This cross-sectional study was conducted in 115 patients admitted with diabetic foot ulcer over a period of 9 months from October 2015 to June 2016 at the department of general surgery, Sri Manakula Vinayagar Medical College and Hospital, Pondicherry. Tissue scrapping samples were collected and processed as per standard guidelines.Results: 167 organisms were isolated from 115 patients. 52% of culture showed polymicrobial growth. There was increased prevalence of gram-negative organisms 53% compared to gram positive organisms 47%. When comes to individual isolate, Staphylococcus aureus was the most common organism isolated 24.6% followed by Pseudomonas aeruginosa 21%. All gram-positive aerobes were sensitive to vancomycin and gram-negative isolates were sensitive to amikacin, piperacillin-tazobactum, gentamycin and cefotaxime.Conclusions: Staphylococcus aureus and Pseudomonas were the common pathogens isolated. This study recommends use of vancomycin along with piperacillin-tazobactum as an empirical therapy along with adequate blood sugar control and early debridement of devitalized tissues in patients with diabetic foot infections.
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BackgroundIn view of the gravity of the problem of antimicrobial resistance among pathogenic bacteria against conventional bactericidal agents, investigation on alternative approaches to combat bacterial infections is warranted.ObjectiveCurrent study aimed at investigating anti-infective potential of a polyherbal ayurvedic formulation namely panchvalkal against three different pathogenic bacteria.Materials and methodsThe panchvalkal formulation available as Pentaphyte P5® was tested for its possible in vitro quorum-modulatory potential against Chromobacterium violaceum, Serratia marcescens, and Staphylococcus aureus through broth dilution assay. Invivo efficacy was demonstrated employing Caenorhabditis elegans as the model host for test pathogens.ResultsThis formulation was found to exert quorum-modulatory effect on C. violaceum, S. marcescens, and S. aureus at 250–750 μg/ml. Besides altering production of the quorum sensing-regulated pigments in these bacteria, the test formulation also had in vitro effect on antibiotic susceptibility, catalase activity and haemolytic potential of the pathogens. Invivo assay confirmed the protective effect of this panchvalkal formulation on C. elegans, when challenged with the pathogenic bacteria. Repeated exposure of S. aureus to panchvalkal did not induce resistance in this bacterium.ConclusionTo the best of our awareness, this the first report on quorum-modulatory potential of panchvalkal formulation, validating the anti-infective potential and moderate prebiotic property of this polyherbal preparation.
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Background: The changing pattern of antimicrobial susceptibility of bacterial pathogens causing acute UTI is a growing problem. Hence, the knowledge of the local pattern of urinary pathogens and their susceptibility to various antimicrobials is of atmost importance for selection of the appropriate empiric therapy for children with acute UTI.Methods: This retrospective cross-sectional study was conducted in 208 children of 1-18 years age group with suspected UTI infection who were admitted in KIMS hospital, Bangalore from January to December 2018. The data of all samples were collected from medical record.Results: Overall 208 children between 1-18 years with suspected UTI were screened. Out of which 48 were culture positive, with a prevalence of 23%. Culture positive UTI was predominantly found in males in 1-5 years age group as against female predominance in 6-18 years age group. E. coli (45.83%) was the commonest organism isolated in our study, followed by Enterococcus (31.25%), Klebsiella (16.67%), Proteus (4.17%) and Acinetobacter (4.17%). Antibiotics with highest sensitivity to E-coli are Amikacin (91%) and Gentamicin (77%). Klebsiella is most sensitive to Gentamicin (87.5%) and piperacillin (75%). Enterococcus has highest sensitivity to Vancomycin (67%) and Linezolid (60%).Conclusions: It requires regular monitoring to determine the current status of resistance against antimicrobial agents. The use of antimicrobials must be restricted in order to decline the resistance and we suggest that empirical antibiotic selection should be based on the knowledge of local pattern of bacterial organisms and their susceptibility to various antimicrobials rather than on universal guidelines.
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Background: Upper respiratory tract infections are mostly caused by viruses and are self-limiting. But it is seen that drug therapy is restored to many of them without adequate justifications. Sometimes multiple drug therapy imposes high cost burden on patients. Use of antibiotics in URTI patients have led to rise in bacterial resistance. So, this study was aimed to analyse the prescription pattern in upper respiratory tract infections and the antibiotic susceptibility of the isolated organisms.Methods: An observational cross-sectional study was conducted in a tertiary care hospital for a period of three months. Based on the inclusion and exclusion criteria sixty patients were selected. Prescriptions of these patients were collected and analysed for the various WHO prescription indicators like average number of drugs per encounter, percentage of drugs prescribed by generic names, percentage of drugs prescribed as injection, drugs form the essential drug list etc. The swabs were collected from the site of infections and were analysed for the bacterial growth. Also, the antibiotic susceptibility of these organisms was tested.Results: A total of sixty prescriptions were collected and analysed. The average number of drugs per prescription was 2.21. Antimicrobials were prescribed in 90% of cases. Approximately 50% cases the combination of amoxicillin and clavulanic acid was prescribed. The percentage of drugs prescribed by generic names was 87% and 68% drugs were form the essential drug list. The culture report of the specimen collected from the swabs showed that only 50% of cases were of some bacterial origin. And the organisms isolated were less susceptible to the antibiotics that were prescribed.Conclusions: This study of prescribing patterns in patients gives appropriate feedback and awareness among health care providers. Rationale prescribing practice will prevent antibiotic resistance and reduction in the adverse drug reactions.
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@#Aims: The study was carried out to investigate Staphylococcus aureus in clinical and subclinical mastitis in small ruminant and to identify the antibiotic sensitivity profiles of the isolates. Methodology and result: A total of 171 milk samples from lactating sheep and goats were collected from Besut and Setiu districts in Terengganu, Peninsular Malaysia. All animals were screened for mastitis using the California Mastitis Test (CMT). Phenotypic identification of S. aureus was determined using Gram-staining, catalase test, coagulase test, and oxidase test. The genotypic identification was conducted using Polymerase Chain Reaction (PCR) to detect the nuc gene. The susceptibility of S. aureus to the antibiotic was tested by using the Kirby-Bauer method. In this study, subclinical and clinical mastitis were detected in 66/171 (39%) and 41/171 (24%) respectively. The cultures and PCR results showed that 18/39 (46%) samples (9 subclinical and 9 clinical mastitis) were positive for S. aureus. The antimicrobial susceptibility tests profiles shows 4/18 (22%) and 2/18 (11%) isolates were resistant to penicillin and tetracycline, respectively. However, all isolates were tetK and tetM negative. On the other hand, these isolates susceptible to amoxicillin, gentamicin, nitrofurantoin, oxacillin, cefoxitin, norfloxacin, chloramphenicol, amikacin, kanamycin, doxycycline and cefotaxime. Conclusion, significance and impact of study: The presence of S. aureus from milk samples of both clinical and subclinical mastitis goats indicates, potential hazard on the livestock as well as public health settings. The occurrence of penicillin and tetracycline resistance should not be undermined. Milk from mastitis samples may play an important role as potential reservoir and transmission of this pathogen in posing disease regardless of antibiotics resistance background.
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Background: Surgical site infections are known to be one of the most common causes of nosocomial infections worldwide and raises an important public health concern.Methods: A prospective observational study was conducted across 12 months (July 2018-June 2019) in a tertiary care hospital. The present study includes 50 pus samples from clinically suspected cases of post-operative wound infections from various surgical wards which were inoculated in Department of Microbiology. The phenotypic identification of different bacterial isolates especially MRSA and ESBL producers along with their antimicrobial susceptibility testing was interpreted according to CLSI guidelines.Results: Out of 50 samples, 44 showed positive culture. The infections were more common in emergency situations, age group of 20-30 years and in females. The most common bacterial isolates were Staphylococcus aureus (43.18%) followed by E. coli (22.72%), Klebsiella (15.9%), CONS (13.63%) and Pseudomonas (4.54%). Out of 19 Staphylococcus aureus 9 were MRSA and these gram-positive bacteria were highly sensitive to Linejolid and Clindamycin. In gram negative group 22.72% of E. coli and 15.9% of Klebsiella were ESBL producers who were susceptible mainly to Aztreonam, Linezolid or Cefoxitine.Conclusions: Post-operative wound or surgical site infections is the most important factor responsible for significant morbidity, mortality, prolonged hospitalization and additional cost to treatment in surgical patients. Marked resistance of isolates to commonly used antibiotics indicates the need of judicious use of these drugs to prevent the emergence of multi-drug resistant strains.
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The Kumbh Mela is considered the world’s largest mass gathering event (MGE). It represents a unique anthropogenicburden on the river ecosystem and may confer antimicrobial resistance among microbial communities. The present studyexplains the characterization of microbial isolates associated with Godavari River under the advent of the mass bathingevent using culture dependent approach. The isolates were identified by sequencing of 16S rRNA gene and ITS region.Further, the isolates were screened for antibiotic susceptibility against 22 antibiotics using disc diffusion method. A total of63 bacterial and 21 fungal isolates were isolated under the temporal variation of the event. Kocuria and Staphylococcuswere the most prevalent bacterial genera in the samples collected before and during the event, while Meyerozyma andCandida predominate among fungal communities. A group of antibiotics impeding the bacterial protein synthesis werefound to be most effective against C67% of bacterial isolates. However, C37–67% of isolates could escape the action ofinhibitors of bacterial cell wall synthesis. Moreover, bacterial isolates belonging to genera Acinetobacter, Corynebacteriumand Brevibacterium showed higher resistance towards the antibiotics. Observations from the current study suggest likelymicrobial taxa as targets to mitigate the waterborne infections during the MGE.
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Aims:This study was designed to determine the isolates from microbial cultures and the antibiotics susceptibility pattern of adults with lower respiratory tract infection. Study Design:A retrospective study.Place and Duration of Study:This study was carried out at the Pulmonology units of Medicine department and Microbiology research laboratory unit, Microbiology and Parasitology department, University of Abuja Teaching Hospital (UATH) Gwagwalada, Federal Capital Territory (F.C.T) from August 2015 to September 2018 (Thirty-six months).Methodology:This was a retrospective study. patients with LRTI who met the inclusion criteria were reviewed. The data were extracted from patients’ case notes using well-structured tools. The quality of clinical and laboratory work up were verified by the contribution of specialist Pulmonologist and Microbiologist in the management of patients. Results: A total of one hundred and ninety-eight sample were reviewed of which fifty-seven percent (112) were males and the mean age of the study populations was 37± 13.8 years. From the positive cultures 86.9% were bacteremia and 4.0% were fungaemia. Streptococcus pneumoniae(30.3%) was the most predominant bacteria recovered from the sputum specimens; closely followed by Klebsiella pneumonieaand Staphylococcus aureus. imipenem and ofloxacin Aims:This study was designed to determine the isolates from microbial cultures and the antibiotics susceptibility pattern of adults with lower respiratory tract infection. Study Design:A retrospective study.Place and Duration of Study:This study was carried out at the Pulmonology units of Medicine department and Microbiology research laboratory unit, Microbiology and Parasitology department, University of Abuja Teaching Hospital (UATH) Gwagwalada, Federal Capital Territory (F.C.T) from August 2015 to September 2018 (Thirty-six months).Methodology:This was a retrospective study. patients with LRTI who met the inclusion criteria were reviewed. The data were extracted from patients’ case notes using well-structured tools. The quality of clinical and laboratory work up were verified by the contribution of specialist Pulmonologist and Microbiologist in the management of patients. Results: A total of one hundred and ninety-eight sample were reviewed of which fifty-seven percent (112) were males and the mean age of the study populations was 37± 13.8 years. From the positive cultures 86.9% were bacteremia and 4.0% were fungaemia. Streptococcus pneumoniae(30.3%) was the most predominant bacteria recovered from the sputum specimens; closely followed by Klebsiella pneumonieaand Staphylococcus aureus. imipenem and ofloxacin
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Background: Non-fermenting Gram-negative bacilli (NFGNB) are emerging as important causes of blood stream infections (BSI) and they are a major cause of morbidity and mortality worldwide. High intrinsic resistance of NFGNB to antimicrobial compounds makes the treatment of BSIs caused by them difficult and expensive. The aim of this study was to assess frequency and antibiotic susceptibility pattern of non-fermenting gram-negative rods isolated from blood culture of patients.Methods: A total of 3016 blood samples were received in the Department of Microbiology during the study period. All samples were processed according to standard microbiological procedures. Blood culture was done by automated blood culture system, (BacT/Alert) and identification and antibiotic susceptibility of non-fermenting gram negative bacilli was done by VITEK2 Compact System.Results: A total of 120 NFGNB were identified out of which the most common non-fermenters isolated were Acinetobacter sp. (95) followed by Pseudomonas aeruginosa (11), Burkholderia cepacia (09) Sternotrophomonas maltophilia (03) and Sphingomonas sp. (02). Most of the non -fermenters were multi drug resistant showing a high level of antibiotic resistance to most of the first- and second-line drugs. The most effective drugs were colistin and tigecycline.Conclusions: This study underlines the need to identify NFGNB in tertiary care hospitals and to monitor their susceptibility pattern to guide the clinician for better care and management of patients. Improved antibiotic stewardship and strict infection control measures especially hand washing need to be implemented to prevent emergence and spread of multidrug resistant NFGNB in health care settings.
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Streptococcus pyogenes is the most common cause of bacterial tonsillopharyngitis with a sore throat in children;it can also cause weakening sicknesses such as rheumatic beart disease and other suppurative sequelae; peritonsillar abscess and lymphadenitis. The present study was conducted to determine the occurrence of Streptococcus pyogenes organism and their antibiotics susceptibility usually used to treat tonsilitis in children. From the period 2015-2016, 210 swabs were collected from children complaining of acute tonsillitis who presented to the outpatient department of Al-Karama teaching hospital, Baghdad, Iraq. The results revelated that fortuy-one isolates (19,5%) cases were positive culture for S. pyogenes. The residual results; other organisms, mixed culture and negatively cultured were excluded form the study. The incidence of treptococcus pyogenes tonsillitis was most prvalent in the age group 5-7 years 25 (23.8%) and the lowest in the age group 14-16 years 1 (10%). The isolates showed the frequency resistance percentage to: azithromycin 26 (63.4%), erythromycin 24 (58.5%), clarithromycin 19 (46.3%), 6 (14.6%) toAmoxiclillin + Clavulanic acid (Augmentin) and Clindamycin 5 (12.2%). while some isolates showed the lowest resistance percentage to Cefotaxime 3 (7.3%). S. pyogenes were frequently sensitive to Clindamycin 36 (87.8%), Cefotaxime 32 (78%) and Amoxicillin/clavulanic acid 31 (75.6%). Streptococcal infections are a considerable problem in medical and health centers. The incidence of Streptococcus pyogenes tonsillitis was the most dominant in the age group 5-7 years and antibiotics Clindamycin, Cefotaxime, and Augmentin are more effective against these bacteria in patients with recurrent tonsillitis. The early diagnosis, appropriate infection control easures, and guidelines are needed to prevent the spread of the infections ant the development of complications among patients