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Neurological complications associated with influenza in season 2017/18 in Austria- a retrospective single center study.
Journal of Clinical Virology ( IF 8.8 ) Pub Date : 2020-03-30 , DOI: 10.1016/j.jcv.2020.104340
Eirini Mylonaki 1 , Andrea Harrer 1 , Georg Pilz 1 , Patrick Stalzer 2 , Ferdinand Otto 1 , Eugen Trinka 3 , Peter Wipfler 1
Affiliation  

BACKGROUND Neurological complications associated with influenza (NCI) are rare events in adults with seasonal influenza. Information about the characteristics of neurological complications and the burden of disease has been limited to case reports, mainly during the pandemic 2009. Influenza-associated encephalopathy/encephalitis (IAE) is one of the most severe and frequently reported NCI, mostly caused by influenza A. Isolated case reports exist about NCI caused by influenza B. OBJECTIVES The aim of this single center retrospective study is the better understanding of the frequency and the characteristics of NCI in adults in season 2017-2018, depending on the influenza subtype A or B. STUDY DESIGN We reviewed 874 adult patients with laboratory confirmed influenza admitted to the Christian Doppler University Hospital Salzburg, Austria from December 2017 until March 2018 looking for NCI. RESULTS 37 (4 %) of the 874 patients with confirmed influenza had NCI. 4 (11 %) had influenza A and 33 (89 %) had influenza B. IAE was the most frequent complication diagnosed in 24 (65 %) patients, of whom all but one had influenza B and 3 (13 %) had neurological residuals. Moreover 6 (16 %) had isolated epileptic seizures, 2 (5 %) had acute inflammatory demyelinating polyneuropathy (AIDP), and 5 (14 %) were classified as having infection-associated stroke. CONCLUSIONS We report an incidence of 4 % for NCI and a high frequency of IAE caused by subtype B. Therefore, we recommend considering both influenza A and B as an etiologic factor of encephalopathy and other neurological disease in adults.

中文翻译:

一项回顾性单中心研究,奥地利2017/18赛季与流感相关的神经系统并发症。

背景技术与流感(NCI)相关的神经系统并发症在季节性流感成人中很少见。关于神经系统并发症特征和疾病负担的信息仅限于病例报告,主要是在2009年大流行期间。流感相关脑病/脑炎(IAE)是最严重,最常报告的NCI之一,主要由甲型流感引起目标这项单一中心回顾性研究的目的是更好地了解2017-2018年季节成人NCI的发生频率和特征,具体取决于甲型或乙型流感。研究设计我们回顾了874名经实验室证实的流感确诊为成人的患者,这些患者被送往萨尔茨堡基督教多普勒大学医院,奥地利从2017年12月至2018年3月寻找NCI。结果在874例确诊的流感患者中,有37例(4%)患有NCI。4例(11%)患有甲型流感,33例(89%)患有乙型流感。IAE是24例(65%)患者中诊断最频繁的并发症,其中除1例以外所有患者均为乙型流感,3例(13%)患者具有神经系统残留。此外,有6例(16%)患有孤立性癫痫发作,2例(5%)患有急性炎症性脱髓鞘性多发性神经病(AIDP),5例(14%)被归为患有感染相关性中风。结论我们报告由亚型B引起的NCI发生率为4%,IAE的发生频率较高。因此,我们建议将甲型和乙型流感都视为成年人脑病和其他神经系统疾病的病因。结果在874例确诊的流感患者中,有37例(4%)患有NCI。4例(11%)患有甲型流感,33例(89%)患有乙型流感。IAE是24例(65%)患者中诊断最频繁的并发症,其中除1例以外所有患者均为乙型流感,3例(13%)患者具有神经系统残留。此外,有6例(16%)患有孤立性癫痫发作,2例(5%)患有急性炎症性脱髓鞘性多发性神经病(AIDP),5例(14%)被归为患有感染相关性中风。结论我们报告由亚型B引起的NCI发生率为4%,IAE的发生频率较高。因此,我们建议将甲型和乙型流感都视为成年人脑病和其他神经系统疾病的病因。结果在874例确诊的流感患者中,有37例(4%)患有NCI。4例(11%)患有甲型流感,33例(89%)患有乙型流感。IAE是24例(65%)患者中诊断最频繁的并发症,其中除1例以外所有患者均为乙型流感,3例(13%)患者具有神经系统残留。此外,有6例(16%)患有孤立性癫痫发作,2例(5%)患有急性炎症性脱髓鞘性多发性神经病(AIDP),5例(14%)被归为患有感染相关性中风。结论我们报告由亚型B引起的NCI发生率为4%,IAE的发生频率较高。因此,我们建议将甲型和乙型流感都视为成年人脑病和其他神经系统疾病的病因。其中只有一名患有乙型流感,其余三名(13%)都有神经系统残留。此外,有6例(16%)患有孤立性癫痫发作,2例(5%)患有急性炎症性脱髓鞘性多发性神经病(AIDP),5例(14%)被归为患有感染相关性中风。结论我们报告由亚型B引起的NCI发生率为4%,IAE的发生频率较高。因此,我们建议将甲型和乙型流感都视为成年人脑病和其他神经系统疾病的病因。其中只有一名患有乙型流感,其余三名(13%)都有神经系统残留。此外,有6例(16%)患有孤立性癫痫发作,2例(5%)患有急性炎症性脱髓鞘性多发性神经病(AIDP),5例(14%)被归为患有感染相关性中风。结论我们报告由亚型B引起的NCI发生率为4%,IAE的发生频率较高。因此,我们建议将甲型和乙型流感都视为成年人脑病和其他神经系统疾病的病因。
更新日期:2020-03-31
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