Lubwama Margaret, Phipps Warren, Najjuka Christine F, Kajumbula Henry, Ddungu Henry, Kambugu Joyce B, Bwanga Freddie
Department of Medical Microbiology, Makerere University, Kampala, Uganda.
Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA.
BMC Res Notes. 2019 Jul 30;12(1):464. doi: 10.1186/s13104-019-4520-9.
The aim of this study was to determine the predominant bacterial species causing bacteremia among febrile cancer patients, and their antibacterial resistance profiles at the Uganda Cancer Institute.
We enrolled in-patients with a documented fever (≥ 37.5 °C). Bacteria from positive blood cultures were identified using standard methods biochemically. Antibacterial susceptibility testing was performed with the Kirby-Bauer disc diffusion method. From a total of 170 febrile episodes, positive blood cultures were obtained from 24 (14.1%). A positive culture was more likely to be obtained from a patient with neutropenia (P = 0.017). Of 22 (66.7%) Gram-negative bacteria isolated, half were E. coli (n = 11). Gram-negative compared to Gram-positive bacteria were most likely to be isolated from patients with a hematologic malignancy (P = 0.02) or patients with neutropenia (P = 0.006). Of the isolated Enterobacteriaceae 85% (n = 20) were resistant to three or more classes of antibiotic and 41% (n = 7) had extended spectrum beta-lactamases. Of the 11 Gram-positive bacteria isolated, the S. aureus isolate was methicillin resistant but susceptible to vancomycin. Multidrug resistant Gram-negative bacteria are the main cause of bacteremia in febrile cancer patients at the Uganda Cancer Institute. There is need for ongoing microbial surveillance, infection prevention and control, and antibiotic stewardship programs.
本研究旨在确定乌干达癌症研究所发热癌症患者中引起菌血症的主要细菌种类及其抗菌耐药谱。
我们纳入了有发热记录(≥37.5°C)的住院患者。采用标准生化方法鉴定阳性血培养中的细菌。采用 Kirby-Bauer 纸片扩散法进行药敏试验。在总共170次发热发作中,24例(14.1%)血培养呈阳性。中性粒细胞减少患者更易获得阳性培养结果(P = 0.017)。在分离出的22株(66.7%)革兰氏阴性菌中,一半为大肠杆菌(n = 11)。与革兰氏阳性菌相比,革兰氏阴性菌最有可能从血液系统恶性肿瘤患者(P = 0.02)或中性粒细胞减少患者(P = 0.006)中分离出来。在分离出的肠杆菌科细菌中,85%(n = 20)对三类或更多类抗生素耐药,41%(n = 7)产超广谱β-内酰胺酶。在分离出的11株革兰氏阳性菌中,金黄色葡萄球菌分离株对甲氧西林耐药,但对万古霉素敏感。多重耐药革兰氏阴性菌是乌干达癌症研究所发热癌症患者菌血症的主要原因。需要持续开展微生物监测、感染预防与控制以及抗生素管理项目。