RESUMEN
Acute otitis media (AOM) is a leading cause of antibiotic prescriptions in children worldwide, even in the era of pneumococcal conjugate vaccines. We aimed to assess the bacterial spectrum of AOM in children and to investigate the antimicrobial resistance profile in culture-positive cases. We performed a retrospective, tympanocentesis-based analysis of antimicrobial resistance patterns in children with AOM hospitalized in "St Mary" Emergency Hospital for Children Iasi, Romania, between January 2013 and December 2021. A total of 147 samples have been assessed, 97 (65.98%) of which had positive cultures, with Streptococcus pneumoniae and Haemophilus influenzae as the most common microorganisms. A worrying proportion, 82.85% (58/70), of the Streptococcus pneumoniae strains were multidrug-resistant. The World Health Organization included Streptococcus pneumoniae and Haemophilus influenzae on the medium priority group due to penicillin non-susceptibility and ampicillin-resistant strains, respectively. Consequently, strategies to address the threats of antimicrobial resistance are needed to reduce the potential negative effects on hospitalization costs.
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Colistin is a last resort antibiotic used for the treatment of human infections associated with carbapenemase-producing Enterobacteriales. Here, we evaluated the occurrence of mcr-1 and -2 plasmid-mediated colistin resistance in colistin and/or carbapenem resistant human clinical Enterobacteriales and other gram-negative bacteria (n = 543) as well as third generation cephalosporin-resistant (3GCR) Escherichia coli isolates from poultry abattoir workers (n = 15) and poultry fecal samples (n = 92) collected from two geographically separate abattoirs in Romania. which revealed that mcr-1 was present within four sequence types (STs): ST744 (n = 7), ST57 (n = 7), ST156 (n = 2), and ST10 (n = 1). Within STs, serotypes were conserved and, notably, all except one of the mcr-1-positive isolates were found to exhibit fluoroquinolone-resistance (FQR) associated SNPs in both gyrA and parC. While there were variations in genotypes, all isolates belonging to ST744, ST57, and ST156 were rich in resistance determinants, carrying aminoglycoside-modifying enzymes genes, sulfonamide resistance gene bla TEM- 1 as well as bla CMY- 2 AmpC ß-lactamase resistance genes. They also exhibited high similarity in carriage of virulence genes; ST10, however, only carried the mcr-1 gene. Whole genome sequencing (WGS) analysis also revealed that although the mcr-1 gene was identified in a diverse population of E. coli, two STs (ST57 and ST744) predominated and interestingly, were found in isolates across both abattoirs providing evidence for clonal transmission. Also, two main genomic contexts of mcr-1 isolates were revealed with all ST57 isolates harboring the mcr-1 gene between two copies of ISApl1 (or the Tn6330 transposon) whilst a common mcr-1 containing scaffold, highly similar to IncX type mcr-1-bearing plasmids (pWI2-mcr, Accession number: LT838201), was present among mcr-1 isolates of varying phylogenetic backgrounds (ST10, ST744 and ST156). The high prevalence of the mcr-1 gene in poultry E. coli isolates with co-resistance to cephalosporins and quinolones, in a country where antimicrobial use in food production species is poorly regulated, is concerning and the findings from this study should lead to better surveillance of antimicrobial resistance (AMR) in food-production animals in Romania.
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RATIONALE: Salmonella enterica subsp arizonae is a common gut inhabitant of reptiles (snakes are the most common reservoir, but it also occurs in turtles). Alhough human cases owing to this organism are exceedingly rare, it may occasionally infect young infants and immunocompromised individuals with a history of intimate associations with reptiles. Our case is the 20th one among the infections with S arizonae in children, but the 2nd one of otitis and the first of mastoiditis. The other cases had different anatomical locations, such as gastroenteritis, osteomyelitis, meningitis, ankle infection, wound infection, and sinusitis. PATIENT CONCERNS AND DIAGNOSIS: We report a rare case of otitis with Salmonella in a previously healthy adolescent, which was most likely acquired after bathing in a lake. The ear infection was complicated with mastoiditis. Audiometric testing showed a moderately conductive hearing loss (60âdB on pure-tone average). INTERVENTION: Standard therapy for S arizonae was initiated. The surgery revealed a "hidden" cholesteatoma. Surgical management comprised of canal wall up mastoidectomy with attico-antrotomy and posterior tympanotomy followed by tympanoplasty. OUTCOMES: Daily postoperative dressing care of the incision, along with antibiotic lavage of the external auditory canal packing, ensured a favorable evolution. The functional gain was important; the 1-month postsurgical pure tone audiogram indicated nearly normal hearing (a mean of 25âdB for air conduction thresholds). LESSON: Salmonella enterica serotype arizonae is a rare cause of human infection, being a common organism in reptiles, like snakes and turtles. Young children are at a particular risk for acquiring such infections. Our study might encourage further epidemiologic investigations into these infections to generate a more effective strategy among public health agencies.
Asunto(s)
Mastoiditis/microbiología , Otitis Media/microbiología , Infecciones por Salmonella/microbiología , Salmonella arizonae , Adolescente , Humanos , Lagos/microbiología , Masculino , Mastoiditis/cirugía , Otitis Media/cirugíaRESUMEN
We report the findings of an active surveillance scheme for detection of asymptomatic carriers with carbapenemase-producing Gram-negative bacteria (CP-GNB) in Romanian hospitals. During a pilot study from December 2014 to May 2015, faecal cultures were screened in three hospitals (two large, one medium-size) for patients newly admitted to selected wards or inpatients transferred from other wards to an intensive-care unit. The study revealed a high prevalence of CP-GNB detected in 22/27 and 28/38 of the carbapenem non-susceptible isolates from Hospitals 1 and 3, respectively. CP-GNB identified through faecal screening included NDM-1-producing Serratia marcescens and Klebsiella pneumoniae, OXA-48-producing K. pneumoniae and OXA-23-producing Acinetobacter baumannii. The distribution of the CP-GNB varied between the hospitals, with NDM-1-producing S. marcescens and K. pneumoniae being prevalent in the north-central part of the country and OXA-23/24-producing A. baumannii, OXA-48-producing K.pneumoniae, Morganella morganii and VIM-2-producing Escherichia coli/Pseudomonas aeruginosa detected in the north-east of the country. Conjugation studies showed that carbapenem resistance was transferable and PCR-based replicon typing identified blaNDM-1 on IncFIIs in S. marcescens and K. pneumoniae from Hospital 1 and blaOXA-48 on IncL plasmids in all Klebsiella spp. isolates from Hospitals 1 and 3. Our findings underline the importance of active surveillance for detection of CP-GNB asymptomatic faecal carriers and suggest a likely endemic spread of CP-GNB in Romania.
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Proteínas Bacterianas/metabolismo , Bacterias Gramnegativas/enzimología , Bacterias Gramnegativas/aislamiento & purificación , Infecciones por Bacterias Gramnegativas/epidemiología , Infecciones por Bacterias Gramnegativas/microbiología , Vigilancia de la Población/métodos , beta-Lactamasas/metabolismo , Trazado de Contacto , Femenino , Bacterias Gramnegativas/clasificación , Infecciones por Bacterias Gramnegativas/diagnóstico , Promoción de la Salud/estadística & datos numéricos , Humanos , Masculino , Tamizaje Masivo/métodos , Proyectos Piloto , Prevalencia , Factores de Riesgo , Rumanía/epidemiologíaRESUMEN
A 52 years old patient is hospitalized in June 2007 in the Cardiology Clinic of Cardiovascular Diseases Medical Institute in Iasi with suspected subacute infectious endocarditis. Echocardiography shows mobile vegetation on the pulmonary valve. Acremonium spp is isolated from blood cultures after 2 weeks of incubation. The patient was treated with fluconazole, but died after 3 months due to renal failure.
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Acremonium/aislamiento & purificación , Endocarditis Bacteriana Subaguda/diagnóstico , Fungemia/diagnóstico , Antifúngicos/uso terapéutico , Endocarditis Bacteriana Subaguda/sangre , Endocarditis Bacteriana Subaguda/diagnóstico por imagen , Endocarditis Bacteriana Subaguda/tratamiento farmacológico , Resultado Fatal , Fluconazol/uso terapéutico , Fungemia/sangre , Fungemia/tratamiento farmacológico , Hospitales Universitarios , Humanos , Pacientes Internos , Masculino , Persona de Mediana Edad , Insuficiencia Renal/etiología , Insuficiencia del Tratamiento , UltrasonografíaRESUMEN
AIM: We want to assess the etiology of ventilator-associated pneumonia (VAP) and emergence of resistant phenotypes for greater efficiency of the first-line antimicrobial treatment post-cardiac surgery. The study focuses on patients with VAP post-cardiac surgery at the Institute of Cardiovascular Surgery between April 2nd 2002 and August 27th 2008, divided in two groups, before and after June 14th, 2005. MATERIAL AND METHODS: The tracheal aspirates were examined quantitatively (microscopy, culture). The isolates with clinical significance (> or = 106 CFU/mL) were identified by standard methods and tested by disk difussion or with the breakpoints method for susceptibility to antibiotics. RESULTS: Among the 1527 operated patients, 28 of them were diagnosed with VAP through the clinical pulmonary infection score > or = 6. The 9 most common pathogens in VAP etiology were Pseudomonas aeruginosa 23.81%, Acinetobacter baumannii 19.05%, Stenotrophomonas maltophilia 11.91%, Candida albicans 9.53%, while Klebsiella pneumoniae, Escherichia coli, Staphylococcus aureus, Corynebacterium striatum/amycolatum, Pneumocystis jirovecii amounted 4.76% each. Acinetobacter baumannii and S.maltophilia appear starting with June 15th, 2005. From that moment on we isolated with a higher frequency the gram-negative bacilli which produce extended-spectrum beta-lactamases 15.62%, with multidrug resistance (MDR) 46.86%. The MDR phenotype was more frequent at A.baumannii (15.62%), S. maltophilia (15.62%) and P. aeruginosa (12.50%) compared to K .pneumoniae (3.12%) or E. coli (0%). Methicillin-resistant S. aureus was isolated with a 6.25% frequency. CONCLUSIONS: The most common etiologic agents of ventilator-associated pneumonia post-cardiac surgery are Pseudomonas aeruginosa, Acinetobacter baumannii, Stenotrophomonas maltophilia and Candida albicans. The large use of antibiotics selects infectious agents with intrinsic resistance and multiresistant
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Infecciones Bacterianas/diagnóstico , Infecciones Bacterianas/microbiología , Lavado Broncoalveolar , Procedimientos Quirúrgicos Cardiovasculares , Neumonía Asociada al Ventilador/diagnóstico , Neumonía Asociada al Ventilador/microbiología , Acinetobacter baumannii/aislamiento & purificación , Algoritmos , Infecciones Bacterianas/epidemiología , Lavado Broncoalveolar/estadística & datos numéricos , Candida albicans/aislamiento & purificación , Procedimientos Quirúrgicos Cardiovasculares/efectos adversos , Procedimientos Quirúrgicos Cardiovasculares/instrumentación , Corynebacterium/aislamiento & purificación , Resistencia a Múltiples Medicamentos/efectos de los fármacos , Resistencia a Múltiples Medicamentos/genética , Escherichia coli/aislamiento & purificación , Humanos , Incidencia , Klebsiella pneumoniae/aislamiento & purificación , Pruebas de Sensibilidad Microbiana/métodos , Pneumocystis carinii/aislamiento & purificación , Neumonía Asociada al Ventilador/tratamiento farmacológico , Neumonía Asociada al Ventilador/epidemiología , Neumonía Asociada al Ventilador/genética , Pseudomonas aeruginosa/aislamiento & purificación , Rumanía/epidemiología , Staphylococcus aureus/aislamiento & purificación , Stenotrophomonas maltophilia/aislamiento & purificación , beta-Lactamasas/genéticaRESUMEN
1892-1913 Bacteriological investigations conducted in Iasi's hospitals. * 1896 Up to date lectures featuring chapters on microbiology. 1899-1911 The first interim of the Department. 1 februarie 1912 Bacteriology Department de iure et facto: Alexandru Slatineanu. * 1938-39 Second intermediate period. * 1939-1942 Romanian inframicrobiology first started in Iasi : Stefan S. Nicolau. 1942-1946 Third intermediate period. * 1946 The Bacteriology Department redivivus: Professor Petru Condrea * 1953 The Discipline of Virology: Professor Mihai Duca.
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Academias e Institutos/historia , Microbiología/historia , Facultades de Medicina/historia , Aniversarios y Eventos Especiales , Historia del Siglo XIX , Historia del Siglo XX , Historia del Siglo XXI , Humanos , Microbiología/educación , Rumanía , Virología/educación , Virología/historiaRESUMEN
UNLABELLED: Evaluation of the fungal involvement in the etiology of ventilator-associated pneumonia (VAP) after cardiac surgery. The study had as target the patients diagnosed with VAP after cardiac surgery at the Institute of Cardiovascular Diseases in Iasi, between April 2nd 2002 and December 31st 2009. MATERIAL AND METHOD: Our study included only cases with fungal etiology of VAP. We examined quantitatively the tracheal aspirates with cytology quality score Q = 2+: microscopy and cultivation. The isolates with clinical significance (= 10(6)UFC/mL significantly associated to inflammatory cells) were identified by standard methods or based on the API system (bioMérieux) and tested by the breakpoints method for susceptibility to antifungal agents. RESULTS: Among the 2167 operated patients, 35 of them were diagnosed with VAP through the clinical pulmonary infection score = 6. Fungi caused 15 of 44 VAP episodes. With a frequency of 30.19%, fungi are on 2nd place within the etiologic agents of VAP after non-fermenting Gram-negative bacilli (45.28%). The fungi involved in VAP were: Candida albicans (16.97%), Pneumocystis jirovecii (3.77%), while Candida glabrata, Candida sake, Candida krusei, Geotrichum capitatum and Cryptococcus humicola, amounted 1.89% each. The widespread use of broad spectrum antibiotics led to the emergence of fungi as a common cause of ventilator-associated pneumonia. The involvement in the VAP etiology of P. jirovecii, an un-cultivable fungus with special sensitivity to antibiotics, requires a careful microscopy of specimens.
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Procedimientos Quirúrgicos Cardíacos , Hongos/aislamiento & purificación , Neumonía Asociada al Ventilador/diagnóstico , Neumonía Asociada al Ventilador/microbiología , Adolescente , Adulto , Candida/aislamiento & purificación , Procedimientos Quirúrgicos Cardíacos/efectos adversos , Procedimientos Quirúrgicos Cardíacos/instrumentación , Cryptococcus/aislamiento & purificación , Geotrichum/aislamiento & purificación , Bacterias Gramnegativas/aislamiento & purificación , Humanos , Registros Médicos , Persona de Mediana Edad , Pneumocystis carinii/aislamiento & purificación , Neumonía Asociada al Ventilador/epidemiología , Prevalencia , Estudios Retrospectivos , Factores de Riesgo , Rumanía/epidemiologíaRESUMEN
Today we commemorate a century from the death of two Romanian loving scientists: Antoine Béchamp (1816- March 31 1908), pharmacist, chemist and physician, professor at the Universities of Strasbourg, Montpellier and Lille, and Victor Cornil (1837- April 14 1908), physician, histopathologist and bacteriologist, professor of the University of Medicine in Paris, co-author with Victor Babes on the first ever Bacteriological Treaty.
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Bacteriología/historia , Química/historia , Historia de la Farmacia , Patología/historia , Universidades/historia , Academias e Institutos/historia , Bioquímica/historia , Francia , Historia del Siglo XIX , Historia del Siglo XX , Humanos , Paris , Rumanía , Toxicología/historia , Vino/historiaRESUMEN
OBJECTIVES: to characterize the epidemiological and microbiological spectrum of systemic infections in hematological and oncological patients. METHOD: a prospective study of bloodstream infections was conducted between May 2004-December 2005 in two hospitals from Iasi. RESULTS: We investigated a total of 86 suspected episodes of systemic infections that occurred in 76 selected patients, 40 males and 36 females (average age = 26 years old). There were 39 (45.35%) febrile episodes with positive blood culture and 47 (54.65%) with negative blood culture. The most common microorganisms were gram-positive cocci 12 (30.76%), followed by stable cell-wall deficient forms 9 (23.07%), gram-negative bacteria 7 (17.95%), gram-positive bacteria 5 (12.82%), fungi 4 (10.25%), and anaerobes 2 (5%). From the total of 23 cell-wall deficient form strains (58.97%), 14 returned to their typical morphology (6 gram-positive cocci, 5 gram-positive bacilli, 3 gram-negative bacilli) and 9 were L-stable. CONCLUSIONS: 1) The isolation rate of 45.5% was in accordance with literature reports; similar percentages of gram-positive and gram-negative isolates were found (the shift from predominating gram-negative to a gram-positive etiology was noted). 2) A high proportion of cell wall deficient forms was found, rarely reported in previous studies. 3) Studies reporting local microbiological findings are necessary because they support an initial empiric antibiotic regimens for prophylaxis or therapy more accurately than from other areas. The right treatment protocols remain to be established.
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Antiinfecciosos/uso terapéutico , Bacteriemia/epidemiología , Infecciones por Bacterias Gramnegativas/epidemiología , Infecciones por Bacterias Grampositivas/epidemiología , Neoplasias Hematológicas/complicaciones , Micosis/epidemiología , Neoplasias/complicaciones , Adolescente , Adulto , Anciano , Antibacterianos/uso terapéutico , Antifúngicos/uso terapéutico , Bacteriemia/microbiología , Bacteriemia/prevención & control , Niño , Preescolar , Femenino , Infecciones por Bacterias Gramnegativas/prevención & control , Infecciones por Bacterias Grampositivas/prevención & control , Humanos , Lactante , Control de Infecciones , Masculino , Pruebas de Sensibilidad Microbiana/métodos , Persona de Mediana Edad , Micosis/microbiología , Micosis/prevención & control , Estudios Prospectivos , Rumanía/epidemiologíaRESUMEN
UNLABELLED: A 43-year-old patient admitted with acute myelogenous leukemia, developed bronchopneumonia and sepsis during profound neutropenia. Fever and pulmonary infiltrates did not improve by using empiric antibacterial therapy (Cefoperazona-Sulbactam, Trimethoprim-Sulphametoxazol). Blood and sputum culture were performed and patient received Voriconazol. Both cultures, from blood and sputum, yielded Candida guilliermondii after 48 hours of incubations. The isolates have the same biochemical and antimicrobial spectrum and were susceptible to Amphotericin B and Fluconazole. After a few days of therapy with Voriconazol, fever disappeared and the clinical state of patient was improved. A culture from pharyngeal swab, performed after 11 days, yielded the same microorganism. CONCLUSIONS: (1) The emergence of less common, but medically important fungal pathogens, including Candida guilliermondii, contributes to the rate of morbidity and mortality, especially in the increasingly expanding population of immunocompromised patients. (2) We consider that the oropharyngeal colonization with Candida guilliermondii and profound neutropenia predispose our patient to develop bronchopneumonia and candidemia.
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Candida/aislamiento & purificación , Candidiasis/complicaciones , Fungemia/microbiología , Huésped Inmunocomprometido , Leucemia Mieloide Aguda/complicaciones , Anfotericina B/uso terapéutico , Antifúngicos/uso terapéutico , Bronconeumonía/microbiología , Candidiasis/tratamiento farmacológico , Quimioterapia Combinada , Fluconazol/uso terapéutico , Fungemia/tratamiento farmacológico , Humanos , Leucemia Mieloide Aguda/tratamiento farmacológico , Masculino , Persona de Mediana Edad , Neutropenia/etiología , Pirimidinas/uso terapéutico , Resultado del Tratamiento , Triazoles/uso terapéutico , VoriconazolRESUMEN
These are unusual diseases in pediatric pathology. We present the morphologic aspects of peripheral blood smear and bone marrow smear of nine storage disease cases.
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Enfermedad de Gaucher/sangre , Mucopolisacaridosis/sangre , Enfermedades de Niemann-Pick/sangre , Adolescente , Examen de la Médula Ósea , Niño , Preescolar , Pruebas Hematológicas , Humanos , Estudios RetrospectivosRESUMEN
The tolerance to penicillin of S. pyogenes has been mentioned in pharyngeal strains and associated by some authors with penicillin treatment failure in streptococcal angina. In this study we followed the presence of tolerance in S. pyogenes strains isolated from children hospitalized in the Clinic of Infantile Surgery and Clinic of Dermatology Iasi for skin infections. From 138 samples of pus examined we isolated 14 strains of S. pyogenes. In 7 strains we pointed out the tolerance to penicillin by both, beta-lactamase disc test and time-killing curve methods. We did not correlate to our cases the tolerance presence with penicillin treatment failure.