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首页> 外文期刊>Journal of Clinical Microbiology >Trends in Antibiotic Susceptibility in Staphylococcus aureus in Boston, Massachusetts, from 2000 to 2014
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Trends in Antibiotic Susceptibility in Staphylococcus aureus in Boston, Massachusetts, from 2000 to 2014

机译:2000年至2014年马萨诸塞州波士顿金黄色葡萄球菌的抗生素敏感性趋势

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ABSTRACT The rate of infection by methicillin-resistant Staphylococcus aureus (MRSA) has declined over the past decade, but it is unclear whether this represents a decline in S. aureus infections overall. To evaluate the trends in the annual rates of infection by S. aureus subtypes and mean antibiotic resistance, we conducted a 15-year retrospective observational study at two tertiary care institutions in Boston, MA, of 31,753 adult inpatients with S. aureus isolated from clinical specimens. We inferred the gain and loss of methicillin resistance through genome sequencing of 180 isolates from 2016. The annual rates of infection by S. aureus declined from 2003 to 2014 by 4.2% (2.7% to 5.6%), attributable to an annual decline in MRSA of 10.9% (9.3% to 12.6%). Penicillin-susceptible S. aureus (PSSA) increased by 6.1% (4.2% to 8.1%) annually, and rates of methicillin-susceptible penicillin-resistant S. aureus (MSSA) did not change. Resistance in S. aureus decreased from 2000 to 2014 by 0.8 antibiotics (0.7 to 0.8). Within common MRSA clonal complexes, 3/14 MSSA and 2/21 PSSA isolates arose from the loss of resistance-conferring genes. Overall, in two tertiary care institutions in Boston, MA, a decline in S. aureus infections has been accompanied by a shift toward increased antibiotic susceptibility. The rise in PSSA makes penicillin an increasingly viable treatment option.
机译:摘要耐甲氧西林金黄色葡萄球菌(MRSA)的感染率在过去十年中有所下降,但尚不清楚这是否总体上代表了金黄色葡萄球菌感染的下降。为了评估金黄色葡萄球菌亚型的年感染率和平均抗生素耐药性的趋势,我们在马萨诸塞州波士顿的两家三级医疗机构进行了为期15年的回顾性观察研究,从临床上分离出31,753名成人金黄色葡萄球菌患者。标本。我们从2016年开始通过180个分离株的基因组测序来推断甲氧西林耐药性的得失。2003年至2014年,金黄色葡萄球菌的年感染率下降了4.2%(2.7%至5.6%),这归因于MRSA的年度下降10.9%(9.3%至12.6%)。对青霉素敏感的金黄色葡萄球菌(PSSA)每年增加6.1%(4.2%至8.1%),对甲氧西林敏感的耐青霉素的金黄色葡萄球菌(MSSA)的比率没有变化。从2000年到2014年,金黄色葡萄球菌的耐药性下降了0.8种抗生素(0.7至0.8)。在常见的MRSA克隆复合物中,3/14 MSSA和2/21 PSSA分离株是由抗性赋予基因的丧失引起的。总体而言,在马萨诸塞州波士顿的两家三级医疗机构中,金黄色葡萄球菌感染的减少伴随着对抗生素敏感性的提高。 PSSA的增加使青霉素成为一种越来越可行的治疗选择。

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