Rapid and reliable detection of severe acute respiratory syndrome coronavirus 2 mutations are significant to control the contagion and spread rate of the virus. We aimed to evaluate the N501Y mutation rate in randomly chosen positive patients with the polymerase chain reaction (PCR). The evaluation and analysis of the data with a retrospective approach in cases with mutations, in terms of public health, will contribute to the literature on the global pandemic that affects our society. Public health authorities will take the necessary precautions and evaluate the current situation. The N501Y mutation was detected in patients with positive Covid-19 PCR test results. The positive samples were examined based on the 6-carboxyfluorescein (FAM) channel in reverse transcription PCR (RT-PCR) quantitation cycle (Cq) values as low Cq (<25), medium Cq (25-32), and high Cq (32-38) groups. In the study, 2757 (19.7%) of 13 972 cases were detected as mutation suspects and 159 (5.8%) of them were found to have mutations. The ages of the cases with mutations ranged from 1 to 88 years (mean age of 40.99 ± 17.55). 49.7% (n = 79) of the cases with mutations were male, and 50.3% (n = 80) were female. When the RT-PCR-Cq results were examined, it was seen that it varied between 11.3 and 35.03, with an average of 20.75 ± 3.32. K E Y W O R D S coronavirus, N501Y mutation, polymerase chain reaction (PCR), reverse transcription PCR (RT-PCR), SARS-CoV-2 alpha, gamma, and delta-coronavirus. 6 SARS-CoV-1, SARS-CoV-2, and MERS-CoV are the type beta of coronavirus and only affected on

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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. (JAREM 2015; 5: 75-7)

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