OXA-type Carbapenemases and Susceptibility of Colistin and Tigecycline Among Carbapenem-Resistant Acinetobacter Baumannii Isolates from Patients with Bacteremia in Turkey

Background: Carbapenem-resistant Acinetobacter baumannii (CRAB) has emerged as one of the most troublesome pathogens in healthcare settings worldwide. The present study was conducted to analyze the genes encoding resistance to carbapenems and to determine in vitro activity of colistin and tigecycline against CRAB isolates from blood culture of hospitalized patients at Istanbul University Cerrahpasa Medical School hospital

Presence of Vancomycin, Aminoglycosides, and Erythromycin Resistance Genes in Enterococci Isolated from Clinical Samples in Turkey

Background: Emergence of high-level aminoglycoside and glycopeptide resistance causes more severe prognosis, higher mortality, and recurrence in enterococcal infections. The present study was conducted to investigate the antimicrobial resistance patterns, prevalence of AMEs, erm and van genes of enterococci isolated from various clinical samples at Istanbul University, Cerrahpasa Medical School hospital

Non-Type B Haemophilus Influenzae Meningitis: A Case Report

Haemophilus influenza is one of the most common cause of bacterial meningitis in children. H.influenzae, especially type b (Hib) serotype causes invasive infections in children under five years of age. The widespread use of Hib conjugate vaccines has led to a dramatic decline in the incidence of invasive Hib infections. But, the invasive diseases are still reported, particularly nontypeable H. influenzae (noncapsulated) remain as an important pathogen. However, there is no evidence that nontypeable H. influenzae infections have increased in frequency. Nontypeable H. Influenzae serotype is encountered as a cause of acute bacterial meningitis among all ages. In this paper, we present to draw attention to the causative bacterium, in a case of bacterial meningitis caused by nontypeable H. influenzae infection in a child immunized with Hib vaccine

Bacillus Cereus Catheter-Related Bacteremia in a Patient Diagnosed with Neuroblastoma

Bacillus species can be found in air, water, soil, feces, and particularly in the normal flora of patients with a prolonged length of hospitalization. Therefore, isolation of these microorganisms from clinical samples is a common condition and usually regarded as contaminants. Previously, Bacillus cereus has been rarely associated with infections, but in the last few years, it has been reported with increasing frequency as the bacterial pathogen in patients with intravenous drug abuse, trauma, immunodeficiency syndrome, immunosuppressed patients with a history of underlying malignancy and granulocytopenia. In this study, we present a 3-months-old baby girl who was presented to a private health center with a complaint of not sucking well enough. After clinical examination she was diagnosed with neuroblastoma stage 4 S, metastasis was detected in the liver and bone marrow and surrenalectomy and 14 cures of chemotherapy were applied to the patient. Patient was discharged from the hospital with a permanent tunneled catheter, but she returned to the pediatric emergency department with high fever. After laboratory tests she was diagnosed with febrile neutropenia and ceftazidime and amikacin treatment was started. Ceftazidime treatment was stopped after the isolation of B. cereus from peripheral and catheter blood cultures of the patient and teicoplanin treatment was started. Permanent tunneled catheter was removed under anesthesia, and this suggested the case as a catheter-originated bacteremia after reducing fever of the patient. As a result, we suggest that B. cereus isolation in blood cultures could not everytime mean contamination, and B. cereus may cause catheter-related infections in immunosuppressed patients

The Epidemiological and Molecular Characterization of Vancomycin-Resistant Enterococci Isolated from Rectal Swab Samples of Hospitalized Patients in Turkey

Background: Vancomycin-resistant enterococci (VRE) are a serious problem all over the world. The present study was conducted to investigate antimicrobial resistance patterns, genotypes, clonal relationship, and virulence factors of VRE species isolated from rectal swab samples of hospitalized patients, patient's relatives, and medical staff at Istanbul University Cerrahpasa Medical School hospital