新型布尼亚病毒感染致发热伴血小板减少综合征的护理体会

目的：总结新型布尼亚病毒感染致发热伴血小板减少综合征的护理体会。方法对2011年9月～2012年10月23例发热伴血小板减少综合征的护理工作经验进行总结分析。结果通过做好隔离防护、护理指导与观察，除3例死亡外，其余20例均治愈出院。结论做好隔离与防护，重视患者心理护理与宣教，加强专科护理和病情观察，是促进疾病恢复、预防疾病传播的关键。     

新型布尼亚病毒感染致发热伴血小板减少1例

近年来,我国部分地区相继发现一些以发热伴血小板减少为主要表现的感染性疾病病例,主要临床表现为发热,白细胞、血小板减少和多脏器功能损害[1]。病原体是一种新发现的布尼亚科(Bunyaviridae)病毒,命名为新型布尼亚病毒,主要传播途径是蜱虫叮咬[2]。我院血液科于2011年11月诊断1例,报告如下。     

一株发热伴血小板减少综合征布尼亚病毒的分离鉴定及其生长特性研究

目的 探索疑似发热伴血小板减少综合征病例中病原体的分离鉴定,了解病毒生长特性。方法 利用非洲绿猴肾细胞Vero E6从患者抗凝血标本中分离发热伴血小板减少综合征布尼亚病毒（SFTSV）,并通过血清学、形态学等方法对病毒进行鉴定;将分离的病毒接种不同细胞,利用荧光定量PCR检测不同时间细胞上清中病毒载量的变化。结果 从患者抗凝血标本中分离出SFTSV;免疫荧光显示感染病毒的细胞培养物能与患者血清发生阳性反应;在透射电镜下能观察到布尼亚病毒样颗粒。SFTSV可感染Vero E6、Hep G2、THP-1等多种细胞,但病毒在不同细胞中的复制水平差异明显。其中Vero E6细胞对SFTSV较易感,病毒可增殖至4.89109 copy/ml。而Hep-2和HT29细胞不能被SFTSV感染。结论 从疑似发热伴血小板减少综合征病例血液标本中成功分离出SFTSV。该病毒具有较广泛的细胞嗜性,对肾来源的细胞更易感。这些研究将为后续研究SFTSV的相关基础研究提供重要的线索。     

发热伴血小板减少综合征1例

<正>1临床资料患者,男,56岁,农民,因发热1周、发现血小板减少1d于2011年7月27日收入南昌大学上饶医院内一科。患者于入院前1周割禾淋雨后出现畏寒、发热,体温高达39.0℃,在当地乡卫生院给予退热及静脉滴注抗生素治疗(具体用药不详),效果不     

宁波地区2例发热伴血小板减少综合征患者的临床特征

目的 分析宁波地区2例发热伴血小板减少综合征(SFTS)患者的临床特征及流行病学资料,以期加深对该病诊治的认识。 方法 回顾性分析2012年5月宁波地区首发的2例SFTS的临床资料,采用统一的诊断标准和流行病学个案调查表对病例进行调查。 结果 1例危重型死亡,1例普通型治愈;临床表现起病急,持续高热,全身肌痛,浅表淋巴结肿大,白细胞及血小板进行性下降;2例患者均为居住在丘陵地区老年人,有田间或草丛活动史及蜱叮咬史,患者的密切接触者均无发病病例。 结论 SFTS临床表现复杂,伴有多器官损害,其死因可能与休克、病毒心肌炎、呼吸衰竭等多脏器功能衰竭有关;患者均居住在丘陵地区,有田间或草丛活动史及蜱叮咬史。     

湖南省发现的首例发热伴血小板减少综合征病例流行病学调查分析

目的 调查病例感染途径,了解病例居住地流行情况,为湖南省制定发热伴血小板减少综合征防控对策提供依据。方法 现场流行病学调查和血清流行病学调查方法。结果 患者发病前有可疑蜱叮咬史;病例居住地居民、牛、羊 IgG抗体阳性率分别6.9%、66.7%和100.0%;所捉蜱核酸检测阴性;病例搜索未发现其他病例。结论 湖南省局部地区存在发热伴血小板减少综合征流行,应加大监测和防控力度。     

山东省烟台地区发热伴血小板减少综合征疑似病例检测分析

目的 调查山东省烟台地区发热伴血小板减少综合征疑似病例新型布尼亚病毒(SFTSV)感染情况。 方法 采用双重探针引物实时荧光定量-聚合酶链反应方法对发热伴血小板减少综合征疑似病例血清进行新型布尼亚病毒特异性核酸检测。 结果 135份疑似病例血清样本中新型布尼亚病毒特异性核酸阳性81份,阳性率60.00%。发病第5～8天核酸检出阳性最高;发病高峰主要集中在5-8月;人群年龄分布在37～87岁之间,以60～70岁年龄组发病数最多,占总病例数的32.10%(26/81);92.59%(75/81)的患者为农民;男女性别比为1.79:1。 结论 烟台地区发热伴血小板减少综合征疑似病例存在新型布尼亚病毒感染。     

新型布尼亚病毒感染致发热伴血小板减少综合征病人的皮肤护理

发热伴血小板减少综合征布尼亚病毒（severe fever with thrombocytopenia syndrome bunya virus,SFTSV）简称新型布尼亚病毒,属布尼亚病毒科白蛉病毒属[1],是一种近年来发现、被确认为以蜱虫为传播媒介的新型病毒。临床上以发热、乏力纳差、恶心呕吐、肌肉酸痛、白细胞及血小板减少为主要特征,部分病人有出血、皮下瘀点瘀斑、或伴有尿粪隐血阳性等体征。流行病学调查显示,此类病人以工作、生活在丘陵地区的居民为主,这些地区山林植被丰富,部分病人家里饲养家畜。病人皮肤有明显的蜱虫叮咬史,叮咬后皮肤上留有焦痂。我科自2011年-2012年共收治由江苏省疾病预防控制中心确认的新型布尼亚病毒感染所致的发热伴血小板减少综合征病人共23例。现将其护理总结如下。     

2010-2013年湖北省随州市发热伴血小板减少综合征监测结果分析

目的分析湖北省随州市发热伴血小板减少综合征(SFTS)的监测结果,为SFTS的诊断和防控提供科学依据。方法采用描述流行病学对2010-2013年监测数据进行临床和流行病学特征分析。结果病例以发热伴恶心或乏力为首发症状,血细胞检测结果为血小板和白细胞计数明显减少。2010-2013年共有发热伴血小板减少综合征布尼亚病毒(SFTSV)阳性病例101例,死亡16例;发病高峰主要集中在5-7月,呈散发状态;人群年龄分布在29~86岁之间,50岁以上发病的占83.17%;职业以农民为主,占96.03%。结论 SFTS临床表现复杂,伴有多器官损害,其死因可能与休克、病毒心肌炎、呼吸衰竭等多脏器功能衰竭有关;患者均居住在丘陵地区,有田间或草丛活动史及蜱叮咬史。需加强SFTS的预防意识及诊断能力。     

新型布尼亚病毒感染致发热伴血小板减少综合征病人的皮肤护理

<正>发热伴血小板减少综合征布尼亚病毒(severe fever with thrombocytopenia syndrome bunya virus,SFTSV)简称新型布尼亚病毒,属布尼亚病毒科白蛉病毒属[1],是一种近年来发现、被确认为以蜱虫为传播媒介的新型病毒。临床上以发热、乏力纳差、恶心呕吐、肌肉酸痛、白细胞及血小板减少为主要特征,部分病人有出血、皮下瘀点瘀斑、或伴有尿粪隐血阳性等体征。流行病学调查显示,此类病人以工作、生活在丘陵地区的居民为主,这些地区山林植被丰富,部分病人家里饲养家畜。病人皮肤有明显的蜱虫叮咬史,叮咬后皮肤上留有焦痂。我科自2011     

辽宁省发热伴血小板减少综合征监测与病原学分析

目的 对2012年辽宁省发热伴血小板减少综合征（SFTS）流行病学特征和病原学检测结果进行分析,为临床诊断和预防控制提供依据。方法 以实验室确诊SFTS患者为研究对象,描述三间分布、临床症状体征,并对分离到的病原进行核苷酸序列分析。结果 2012年辽宁省报告的185例疑似病例中,38例实验室确诊感染SFTSV,病死率为5.26%。病例多来自丘陵地区,以中老年、农民为主,无明显性别差异;发病时间为6-10月,部分病例发病前有明确的蜱叮咬史;临床表现主要为发热（100%）、头痛（73.68%）、恶心（65.76%）;血常规检查有血小板计数减少（97.37%）和白细胞计数减少（78.95%）。分离到的9株SFTSV的S、M片段核苷酸序列同源性达95%以上。结论 辽宁省是SFTS的流行地区,需提高SFTS的诊疗能力及加强对SFTS的预防控制。     

新型布尼亚病毒感染致发热伴血小板减少综合征预后相关性分析

目的 探讨影响发热伴血小板减少综合征(SnTS)预后的临床指标,为SFTS危重病例的病程变化、影响预后的危险因素提供参考依据.方法 武汉大学人民医院从2012年5月至2014年7月收治17例发热伴血小板减少综合征确诊病例.收集17例患者的流行病学史、临床表现、并发症、体检和实验室检查结果等临床资料进行回顾性分析,比较痊愈组和死亡组入院时(发病第6天)以及入院3d时(发病第9天)的临床表现和实验室检查结果,应用Spearman相关性分析影响SFTS患者预后的危险因素.结果 老年男性患者出现精神神经症状、肝功能明显异常、凝血功能明显异常提示病情危重,预后极差.SFTS患者AST、ALT明显升高,AST539 U/L(229.73,545.4) U/ (r=0.597,P=0.015)是影响预后的危险因素.血氨升高提示严重的肝脏功能损伤,常常合并神经系统症状,表现为烦躁、谵妄、不自主的四肢颤动.SFTS患者出现血小板显著下降,口腔溃疡/牙龈出血,消化道出血提示病情危重;PLT 24.88×109 L-1 (12.75,35.00) ×109L-1 (r=0.557,P=0.005)或者APTT86.06s (66.88,114.18)s(r=0.798,P=0.001)或者D-二聚体9.79 mg/L (4.09,16.51) mg/L(r=0.597,P=0.015)是影响预后的危险因素.结论 发病第9天(高峰期第3天)的AST、WBC、PLT、Am、D-二聚体是影响发热伴血小板减少综合征患者预后的危险因素.     

北京市发热伴血小板减少综合征监测和病原检测分析

目的 分析北京市发热伴血小板或白细胞减少综合征监测和严重发热伴血小板减少综合征病毒(SFTSV)感染情况.方法 对符合监测对象定义的病例(体温≥37.5℃伴血小板＜80×109/L或白细胞＜3.0×109/L)进行流行病学调查并采集乙二胺四乙酸抗凝和非抗凝血液标本分别检测嗜吞噬细胞无形体和SFTSV.结果 201...     

Steroid pulse therapy in patients with encephalopathy associated with severe fever with thrombocytopenia syndrome

Severe fever with thrombocytopenia syndrome (SFTS) is a tick-borne infectious disease caused by the SFTS virus (SFTSV). Clinical symptoms of SFTS often involve encephalopathy and other central neurological symptoms, particularly in seriously ill patients; however, pathogenesis of encephalopathy by SFTSV is largely unknown. Herein, we present case reports of three patients with SFTS, complicated by encephalopathy, admitted to Tokushima University hospital: one patient was a 63-year-old man, while the other two were 83- and 86-year-old women. All of them developed disturbance of consciousness around the 7th day post onset of fever. After methylprednisolone pulse therapy of 500 mg/day, all of them recovered without any neurological sequelae. SFTSV genome was not detected in the cerebrospinal fluid of 2 out of the 3 patients that were available for examination. In these patients, disturbance of consciousness seemed to be an indirect effect of the cytokine storm triggered by SFTSV infection. We propose that short-term glucocorticoid therapy might be beneficial in the treatment of encephalopathy during early phase of SFTSV infection.     

血必净注射液对发热伴血小板减少综合征的疗效分析

目的对血必净注射液治疗发热伴血小板减少综合征（SFTS）的疗效进行分析。方法对80例分别加入血必净治疗组和常规治疗组病例的全身炎症反应综合征（SIRS）改善率、APACHEⅡ评分、SOFA 评分、DIC 评分和血小板等进行统计学分析。结果治疗第7天血必净治疗组DIC 评分改善和血小板恢复正常情况明显高于常规治疗组（P ＜0．05）,且治疗组内比较差异有统计学意义（P ＜0．05）;常规治疗组和血必净治疗组SIRS 改善率均有改善（P ＜0．05）,两组比较差异无统计学意义（P ＞0．05）。结论血必净注射液能有效改善发热伴血小板减少综合征的DIC 评分,使血小板恢复正常。     

Pathophysiology of severe fever with thrombocytopenia syndrome and development of specific antiviral therapy

Severe fever with thrombocytopenia syndrome (SFTS) caused by SFTS virus (SFTSV), a novel phlebovirus, was reported to be endemic to central and northeastern PR China and was also to be endemic to South Korea and western Japan. SFTS is an emerging viral infection, which should be categorized as a viral hemorrhagic fever disease as Crimean-Congo hemorrhagic fever (CCHF) is caused by CCHF virus. SFTS is a tick-borne viral infection. SFTSV is maintained between several species of ticks and wild and domestic animals in nature. Patients with SFTS show symptoms of fever, general fatigue, and gastrointestinal symptoms such as bloody diarrhea. The severely ill SFTS patients usually show gastrointestinal hemorrhage and deteriorated consciousness. The case fatality rate of SFTS ranges from 5 to 40%. Pathological studies on SFTS have revealed that the mechanisms behind the high case fatality rate are virus infection-related hemophagocytic syndrome associated with cytokine storm, coagulopathy due to disseminated intravascular coagulation causing bleeding tendency, and multi-organ failure. Favipiravir was reported to show efficacy in the prevention and treatment of SFTSV infections in an animal model. A clinical study to evaluate the efficacy of favipiravir in the treatment of SFTS patients has been initiated in Japan. SFTSV is circulating in nature in PR China, Korea, and Japan, indicating that we cannot escape from the risk being infected with SFTSV. The development of specific therapy and preventive measures is a pressing issue requiring resolution to reduce the morbidity and mortality of SFTS patients.     

Analysis of the risk factors and prognosis for severe fever with thrombocytopenia syndrome associated encephalopathy

ObjectiveSevere fever with thrombocytopenia syndrome (SFTS) is frequently associated with neurological injury, but there are currently few relevant studies. The goal of this study was to look at the risk factors for SFTA-associated encephalopathy (SFTSAE) and the short- and long-term prognosis of such patients.MethodsWe retrospectively studied 145 patients with SFTS who were treated at our hospital between May 2019 and November 2021. Clinical characteristics were collected, and patients were divided into two groups based on whether there was neurological injury during the disease: SFTSAE group and non-SFTSAE group. Univariate analysis was used to compare the differences in clinical data and outcomes between two groups, and multivariate Logistic regression analysis was used to reveal the independent risk factors for SFTSAE, and the predictive efficacy was assessed using the receiver operating characteristic (ROC) curve. Furthermore, survivors of SFTSAE were contacted by phone 6 months after discharge to assess the case fatality rate and quality of life.ResultsThe prevalence of SFTSAE was 22.7% (33/145). Bleeding symptoms, D-dimer level and blood amylase level were all independent risk factors for SFTSAE (P < 0.05). The combined AUC of these three factors was 0.969. Patients with SFTSAE had a 45.4% in-hospital mortality rate, and survivors had a largely normal quality of life after discharge.ConclusionPatients with SFTSAE frequently have multiple organ dysfunction, a high mortality rate, and a favorable long-term prognosis for survivors. Clinical manifestations of bleeding symptoms, elevated serum amylase, and elevated D-dimer were all independent risk factors for SFTSAE.     

Several catechins and flavonols from green tea inhibit severe fever with thrombocytopenia syndrome virus infection in vitro

IntroductionSevere fever with thrombocytopenia syndrome (SFTS) is an emerging tick-borne hemorrhagic fever caused by SFTS virus (SFTSV). The mortality rate of SFTS is pretty high, but no vaccines and antiviral drugs are currently available.MethodsThe antiviral effects of six green tea-related polyphenols, including four catechins and two flavonols, on SFTSV were evaluated to identify natural antiviral compounds.ResultsPretreatment with all polyphenols inhibited SFTSV infection in a concentration-dependent manner. The half-maximal inhibitory concentrations of (?)-epigallocatechin gallate (EGCg) and (?)-epigallocatechin (EGC) were 1.7–1.9 and 11–39 μM, respectively. The selectivity indices of EGCg and EGC were larger than those of the other polyphenols. Furthermore, pretreatment with EGCg and EGC dose-dependently decreased viral attachment to the host cells. Additionally, the treatment of infected cells with EGCg and EGC inhibited infection more significantly at a lower multiplicity of infection (MOI) than at a higher MOI, and this effect was less effective than that of pretreatment. Pyrogallol, a trihydroxybenzene that is the structural backbone of both EGCg and EGC, also inhibited SFTSV infection, as did gallic acid.ConclusionsOur study revealed that green tea-related polyphenols, especially EGCg and EGC, are useful as candidate anti-SFTSV drugs. Furthermore, the structural basis of their antiviral activity was identified, which should enable investigations of more active drugs in the future.     

Clinical features of fatal severe fever with thrombocytopenia syndrome that is complicated by invasive pulmonary aspergillosis

Introduction

Severe fever with thrombocytopenia syndrome (SFTS) has been prevalent in parts of Asia during recent years. However, SFTS with invasive pulmonary aspergillosis (IPA) is rare, and it is important to understand its clinical features.