mpox (monkeypox)

mpox ( 猴痘 )
  • 文章类型: Journal Article
    背景:2022年5月,猴痘(mpox)突然再次出现,并在全球范围内迅速传播。这次全球爆发是国际关注的突发公共卫生事件。这项研究调查了越南医学和药学大学生对水痘的知识和态度。
    方法:这项在线横断面调查是使用便利抽样方法在四所大学的学生中进行的。学生在课间休息时通过GoogleForms链接(快速响应代码)在大学圆形剧场中共享了半结构化问卷。频率(百分比)和平均值(标准划分)用于描述性统计。进行了单变量和多元线性回归分析,以确定与学生天花知识和态度相关的因素。P值<0.001被认为是统计学意义。
    结果:共有1,848名学生参加了这项研究(包括1,030名医学生和818名药学学生)。他们寻求水痘/健康信息的常见来源包括互联网(89.7%)和大众媒体(64.2%)。学生的平均知识和态度得分分别为11.542±3.910(范围:0-23)和30.301±3.738(范围:9-45),分别。药学专业学生的平均知识得分(12.139±3.545)显著高于医学生(11.067±4.118)(p<0.001)。前者的平均态度得分(30.454±3.787)相对高于后者(30.181±3.696),但这种差异是微不足道的(p=0.111)。与学生天花知识和/或态度显著相关的因素是他们的性别,年龄,一年的学习,residence,major,平均成绩点,大学的类型,过去寻找天花信息,并使用可靠的来源寻求健康信息(p<0.001)。学生的知识和态度得分之间存在正相关(p<0.001)。
    结论:学生对天花的知识相对较差,而他们的态度相对积极。大学和相关部门应关注上述因素,并使用多种平台和渠道进行沟通,以确保有关水痘的可信赖信息能够接触到尽可能多的学生。
    BACKGROUND: In May 2022, monkeypox (mpox) suddenly reappeared and rapidly spread worldwide. This global outbreak was a public health emergency of international concern. This study investigated Vietnamese medical and pharmacy university students\' knowledge and attitudes towards mpox.
    METHODS: This online cross-section survey was administered among students in four universities using a convenience sampling method. A semi-structured questionnaire was shared among students via a Google Forms link (quick-response code) in university amphitheaters at recess. Frequency (percentage) and mean (standard division) were used for descriptive statistics. Univariate and multivariate linear regression analyses were conducted to identify factors associated with students\' mpox knowledge and attitudes. A p-value < 0.001 was considered statistical significance.
    RESULTS: A total of 1,848 students participated in this study (including 1,030 medical students and 818 pharmacy students). Their common sources for seeking mpox/health information included the Internet (89.7%) and mass media (64.2%). Students\' average knowledge and attitude scores were 11.542 ± 3.910 (range: 0-23) and 30.301 ± 3.738 (range: 9-45), respectively. The average knowledge score of pharmacy students (12.139 ± 3.545) was significantly higher than that of medical students (11.067 ± 4.118) (p < 0.001). The average attitude score of the former (30.454 ± 3.787) was comparatively higher than that of the latter (30.181 ± 3.696), but this difference was insignificant (p = 0.111). Factors significantly associated with students\' mpox knowledge and/or attitudes were their sex, age, year of study, residence, major, grade point average, type of university, seeking mpox information in the past, and using reliable sources to seek health information (p < 0.001). A positive correlation existed between students\' knowledge and attitude scores (p < 0.001).
    CONCLUSIONS: Students\' knowledge about mpox was relatively poor, while their attitudes were comparatively positive. Universities and relevant authorities should focus on the above factors and use multiple platforms and channels of communication to guarantee that trustworthy information about mpox can reach as many students as possible.
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  • 文章类型: Journal Article
    背景:最近在非洲以外的国家爆发了猴痘(Mpox),大量病例迅速蔓延到几乎每个大陆。我们旨在分析全球卫生安全(GHS)指数(类别和指标)与不同地区和全球水痘病例率之间的相关性。
    方法:在这项横断面研究中,我们使用了来自世界卫生组织的水痘病例数据,以及全球统一制度的类别和检测指标,预防,reporting,卫生系统,快速反应,遵守国际规范,和风险环境。使用粗略和调整后的非线性回归模型,结果指标是GHS指数(类别和指标)与Mpox病例率之间的关系。
    结果:进行调整分析后,在99个国家和美洲区域,只有风险环境和检测和报告指数与水痘病例率相关,分别。预防类别的抗菌素耐药性(AMR)指标,快速反应类别的风险沟通,规范类别的联合外部评估和绩效兽医服务,在99个国家/地区,风险环境类别的基础设施充足性与Mpox病例率相关(p<0.05)。检测和报告类别的实验室系统强度和质量指标,在美洲地区国家,快速响应类别的应急响应操作指标与Mpox病例率相关(p<0.05)。AMR指标的预防出现类别,风险环境类别的基础设施充足性与欧洲区域国家的Mpox病例率相关(p<0.05)。在其他地区的国家,只有快速反应类别的贸易和旅行限制指标与Mpox病例率相关(p<0.05).
    结论:国家/地区,特别是在美洲地区,通过GHS指数衡量的高水平的基础设施和实验室系统强度和质量,可以更好地检测更多的水痘病例。因此,他们有更高的水痘病例检测率,并能成功应对水痘爆发。
    BACKGROUND: Recent outbreaks of monkeypox (Mpox) have occurred in countries outside of Africa, with large numbers of cases spreading rapidly to almost every continent. We aimed to analyze the correlation between the Global Health Security (GHS) Index (categories and indicators) and the Mpox case rate in different regions and globally.
    METHODS: In this cross-sectional study, we used data from Mpox cases from the WHO, and the GHS categories and indicators for detection, prevention, reporting, health system, rapid response, international norms compliance, and risk environment. Outcome measures were the relationship between GHS index (categories and indicators) and Mpox case rate using crude and adjusted non-linear regression models.
    RESULTS: After performing adjusted analyses, only risk environment and detection and reporting index were associated with Mpox case rates in the 99 countries and the Region of the Americas, respectively. Antimicrobial resistance (AMR) indicators of the prevention category, risk communication of the rapid response category, the joint external evaluation and performance veterinary services of the norms category, and the infrastructure adequacy of the risk environment category were associated with Mpox case rates in the 99 countries (p<0.05). Laboratory systems strength and quality indicator of the detection and reporting category, and emergency response operation indicator of the response rapid category were associated with Mpox case rates in the countries of the region of the Americas (p<0.05). AMR indicator of the prevention of the emergence category, and the infrastructure adequacy of the risk environment category were associated with Mpox case rates in the countries of the European Region (p<0.05). In the countries of the other regions, only the trade and travel restrictions indicator of the rapid response category was associated with Mpox case rates (p<0.05).
    CONCLUSIONS: Countries, particularly in the Americas region, with high levels of infrastructure adequacy and laboratory system strength and quality as measured by the GHS index are better equipped to detect more Mpox cases. Therefore, they have higher Mpox case detection rates and can successfully respond to Mpox outbreaks.
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  • 文章类型: Journal Article
    背景:在患者住院期间,病毒脱落的动力学和针对猴痘病毒(MPXV)的特异性体液反应尚未得到很好的表征。这项研究的目的是使用来自住院患者的纵向配对收集的样本来确定病毒载量和针对MPXV的抗体水平。
    方法:于2023年6月2日至9月23日在中国首都医科大学附属北京地坛医院招募了因痘住院的患者。配对样品,包括皮肤损伤的样本,口咽,唾液,粪便,尿液,等离子体,和血清,在入院后第1、3、7和14天连续收集,直至出院。并非所有患者都具有在所有时间点获得的样品。通过定量PCR分析所有样品。通过使用临床样品和Vero细胞进行病毒分离。IgM的存在,IgA,IgG,并评估了针对MPXV的中和抗体(NAb)。第一次采集的血浆样本是在患者住院时采集的,并测量样品中细胞因子和趋化因子的水平。人口统计数据,天花疫苗接种状况,已知接触MPVX的历史,使用标准病例报告表收集HIV状况和其他临床数据。
    结果:从39名被招募的水痘患者中连续采集了510个标本。在所有样本中,皮损的病毒DNA检出率和病毒载量最高,唾液样本的比率和病毒载量位居第二。出院前一天,85%的干屑(Ct中位数28.2,范围19.0-38.3)和70%的唾液样本(Ct中位数32.4,范围24.5-38.1)对病毒DNA呈阳性,其中,在病毒培养中,有23.1%的干草呈阳性。口咽中病毒DNA的检出率,唾液,粪便样本随时间减少,而血浆中的速率,血清,尿样在症状发作(PSO)后10天之前迅速增加。MPXV-IgM出现的中位天数,MPXV-IgA,MPXV-IgG,NAb在8(四分位数间距[IQR]7-9),9(7-10)12(9-15)和12(9-15)PSO,分别。IgM,IgA,IgG,NAb滴度随时间增加。在第11天和第21天之间,PSO,HIV感染者(PWH)的NAb滴度低于无HIV感染者(PWOH).NAb滴度增加与唾液中病毒载量降低相关(r=0.28,p=0.025),粪便(r=0.35,p=0.021),血浆(r=0.30,p=0.0044),和血清样本(r=0.37,p=0.001)。与PWOH相比,PWH有较高的血浆MIP-1α水平,MIP-1β,G-CSF,IL-4和碱性FGF。
    结论:患者出院时,临床样本的病毒培养阳性率较高,这表明对患水痘的人需要有效的公共卫生管理策略。PWH中的低NAb滴度和高水平的细胞因子表明,需要早期治疗来控制高危人群的炎症。
    背景:国家自然科学基金,中国医学科学院,北京协和医学院中央大学基础研究基金,国家重点研发计划.
    BACKGROUND: The dynamics of viral shedding and the specific humoral response against monkeypox virus (MPXV) have not been well characterized in patients across their disease course during hospitalisation. The aim of this study was to determine the viral load and the levels of antibodies against MPXV using longitudinal paired-collected samples from hospitalized patients.
    METHODS: Patients who were hospitalised with mpox were recruited at Beijing Ditan Hospital Capital Medical University in China between June 2 and September 23, 2023. Paired samples, including samples from skin lesions, the oropharynx, saliva, faeces, urine, plasma, and serum, were serially collected at days 1, 3, 7, and 14 after admission until discharge. Not all of the patients had samples obtained at all of the timepoints. All the samples were analysed via quantitative PCR. Virus isolation was performed by using clinical samples and Vero cells. The presence of IgM, IgA, IgG, and neutralising antibodies (NAbs) against MPXV was evaluated. The first collected plasma sample was taken when the patient was hospitalised, and the levels of cytokines and chemokines were measured in the sample. The demographic data, smallpox vaccination status, history of known exposure to MPVX, HIV status and other clinical data were collected using a standard case report form.
    RESULTS: A total of 510 specimens were serially collected from 39 recruited people with mpox. Among all the samples, the skin lesions had the highest viral DNA detection rates and viral loads, and the saliva samples had the second highest rates and viral loads. One day before discharge, 85% of the dry scrabs (median Ct 28.2, range 19.0-38.3) and 70% of the saliva samples (median Ct 32.4, range 24.5-38.1) were positive for viral DNA, Of which, 23.1% of dry scrabs were positive in viral culture. The rate of viral DNA detection in the oropharyngeal, saliva, and faecal samples decreased with time, while the rates in the plasma, serum, and urine samples increased quickly before 10 days post symptom onset (PSO). The median days of appearance of MPXV-IgM, MPXV-IgA, MPXV-IgG, and NAb were at 8 (interquartile range [IQR] 7-9), 9 (7-10), 12 (9-15), and 12 (9-15) PSO, respectively. The IgM, IgA, IgG, and NAb titres increased with time. Between days 11 and 21 PSO, the NAb titres were lower in people living with HIV (PWH) than in people living without HIV (PWOH). Increased NAb titres were associated with decreased viral loads in the saliva (r = 0.28, p = 0.025), faeces (r = 0.35, p = 0.021), plasma (r = 0.30, p = 0.0044), and serum samples (r = 0.37, p = 0.001). Compared with PWOH, PWH had higher plasma levels of MIP-1α, MIP-1β, G-CSF, IL-4, and FGF-basic.
    CONCLUSIONS: The high positive viral culture rate of clinical samples of patients when they are discharged from the hospital indicates that effective public health management strategies are needed for people with mpox. The low NAb titres and high levels of cytokines in PWH shows that earlier treatment is needed to control inflammation in high-risk populations.
    BACKGROUND: National Natural Science Foundation of China, Chinese Academy of Medical Sciences, Fundamental Research Funds for the Central Universities for Peking Union Medical College, National Key R&D Program of China.
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  • 文章类型: Journal Article
    背景:在拉丁美洲,秘鲁的猴痘(Mpox)病例数排名第二,其中超过50%是人类免疫缺陷病毒(HIV)阳性。这里,我们比较了秘鲁HIV感染者和非HIV感染者之间水痘的流行病学和临床特征.
    方法:我们使用秘鲁国家监测系统从2022年6月15日至2023年12月31日报告的确诊水痘病例数据进行了一项全国回顾性研究。
    结果:共纳入3561例确诊的水痘病例。其中,2123(60%)患者是艾滋病毒携带者(PLWH),对于30岁或30岁以上的人来说,同性恋(调整后的赔率比[aOR]8.58[6.95-10.59],p<0.0001),双性恋(aOR=4.44[3.46-5.69],p<0.0001),性工作者(aOR=2.24[1.07-4.68],p=0.032),有梅毒病史的人(aOR=2.07[1.66-2.58],p<0.001),住院(aOR=3.08[2.03-4.68],p<0.001)。PLWH更可能有直肠炎(aOR=1.73[1.26-2.37],p=0.001)。总死亡率为3561人中的20人(0.56%)。在PLWH和Mpox中,住院(p<0.001)和非ART(p<0.001)患者死亡较多.
    结论:我们的研究结果突出表明,秘鲁水痘病例中的HIV感染与高危性行为和高住院可能性相关。
    BACKGROUND: In Latin America, Peru has the second highest number of cases of monkeypox (Mpox), of which more than 50 % are Human Immunodeficiency Virus (HIV)-positive. Here, we compared the epidemiological and clinical characteristics of Mpox between people with and without HIV in Peru.
    METHODS: We conducted a national retrospective study using data on confirmed cases of Mpox reported by the Peruvian National Surveillance System from 15 June 2022 to 31 December 2023.
    RESULTS: A total of 3561 confirmed cases of Mpox were included. Of these, 2123 (60 %) patients were people living with HIV (PLWH), with increased odds for those aged 30 years or older, homosexual (adjusted odds ratio [aOR] 8.58 [6.95-10.59], p<0.0001), bisexual (aOR=4.44 [3.46-5.69], p<0.0001), sex workers (aOR=2.24 [1.07-4.68], p=0.032), people with a history of syphilis (aOR=2.07 [1.66-2.58], p<0.001), and hospitalized (aOR=3.08 [2.03-4.68], p<0.001). PLWH were more likely to have proctitis (aOR=1.73 [1.26-2.37], p=0.001). The overall mortality was 20 of 3561 (0.56 %). Among PLWH and Mpox, more deaths occurred in hospitalized (p<0.001) and non-ART (p<0.001) individuals.
    CONCLUSIONS: Our findings highlight that HIV infection among Mpox cases in Peru is associated with high-risk sexual behaviour and a high likelihood of hospitalization.
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  • 文章类型: Journal Article
    背景:许多欧洲国家在2022年爆发了水痘,刚果民主共和国在2023年爆发了水痘。这些爆发与以前爆发的水痘之间存在许多明显的差异;最近的爆发是在普通事件中发生性行为后与男性发生性关系的男性中观察到的,而早期的暴发是在更广泛的人群中观察到的,与性接触没有可识别的联系。这些明显的差异意味着,在2022年和2023年的水痘爆发期间,以前爆发的数据不能可靠地用于参数化传染病模型。关键传输和免疫参数的不确定性阻碍了建模工作。
    方法:我们开发了一种随机,允许性传播和非性传播以及实施非药物干预措施的水痘离散时间群体模型,特别是接触者追踪和暴露前和暴露后的疫苗接种。我们根据来自柏林的案例数据对模型进行了校准,并使用Sobol敏感性分析来识别mpox传播特别敏感的参数。我们还简要分析了非药物干预措施对各种疗效参数的有效性的敏感性。
    结果:我们发现,由于性传播和非性传播引起的传播概率的方差对模型中的水痘传播有很大影响,以前的天花疫苗接种所赋予的对水痘的免疫力水平也是如此。此外,在男男性行为人群中,暴露前疫苗接种数量的差异是导致水痘动力学差异的主要原因.如果没有暴露前疫苗接种,接触者追踪的准确性和及时性都对模型中的水痘传播有很大影响。
    结论:我们的结果对于指导流行病学研究参数确定和确定非药物干预措施成功的关键因素是有价值的。
    BACKGROUND: Many European countries experienced outbreaks of mpox in 2022, and there was an mpox outbreak in 2023 in the Democratic Republic of Congo. There were many apparent differences between these outbreaks and previous outbreaks of mpox; the recent outbreaks were observed in men who have sex with men after sexual encounters at common events, whereas earlier outbreaks were observed in a wider population with no identifiable link to sexual contacts. These apparent differences meant that data from previous outbreaks could not reliably be used to parametrise infectious disease models during the 2022 and 2023 mpox outbreaks, and modelling efforts were hampered by uncertainty around key transmission and immunity parameters.
    METHODS: We developed a stochastic, discrete-time metapopulation model for mpox that allowed for sexual and non-sexual transmission and the implementation of non-pharmaceutical interventions, specifically contact tracing and pre- and post-exposure vaccinations. We calibrated the model to case data from Berlin and used Sobol sensitivity analysis to identify parameters that mpox transmission is especially sensitive to. We also briefly analysed the sensitivity of the effectiveness of non-pharmaceutical interventions to various efficacy parameters.
    RESULTS: We found that variance in the transmission probabilities due to both sexual and non-sexual transmission had a large effect on mpox transmission in the model, as did the level of immunity to mpox conferred by a previous smallpox vaccination. Furthermore, variance in the number of pre-exposure vaccinations offered was the dominant contributor to variance in mpox dynamics in men who have sex with men. If pre-exposure vaccinations were not available, both the accuracy and timeliness of contact tracing had a large impact on mpox transmission in the model.
    CONCLUSIONS: Our results are valuable for guiding epidemiological studies for parameter ascertainment and identifying key factors for success of non-pharmaceutical interventions.
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  • 文章类型: Journal Article
    背景:世界卫生组织宣布水痘为国际公共卫生紧急事件。自2022年1月1日以来,中国已跻身全球受水痘疫情影响最大的十大国家之列。然而,缺乏关于水痘的空间流行病学研究,这对于准确绘制疾病的空间分布和聚类至关重要。
    目的:本研究旨在提供地理上准确的视觉证据,以确定预防和控制水痘的优先区域。
    方法:在2023年6月至11月期间,从中国大陆31个省(台湾除外)收集了当地确诊的水痘病例,澳门,和香港。时空流行病学分析,包括空间自相关和回归分析,进行了研究,以确定水痘发作率的时空特征和聚类模式及其与社会人口统计学和社会经济因素的空间关系。
    结果:自2023年6月至11月,中国大陆30个省共报告了1610例本地确诊的水痘病例,导致每1000万人中11.40人的攻击率。全局空间自相关分析表明,7月(MoranI=0.0938;P=.08),8月(MoranI=0.1276;P=.08),和9月(MoranI=0.0934;P=.07),水痘的发作率表现出集群模式和正的空间自相关。Getis-OrdGi*统计数据确定了北京天花发作率的热点,天津,上海,江苏,和海南。从6月到10月,北京和天津是一致的热点地区。通过Getis-OrdGi*统计,未检测到具有低天花发作率的冷点。当地的MoranI统计数据确定了广东省的高-高(HH)聚集的天花攻击率,北京,和天津。广东省从6月到11月一直表现出HH集群,而北京和天津在7月至9月被确定为HH集群。低-低集群主要位于内蒙古,新疆,西藏,青海,和甘肃。普通最小二乘回归模型显示,天花累积发病率与城市人口比例呈显著正相关(t0.05/2,1=2.4041P=.02),人均国内生产总值(t0.05/2,1=2.6955;P=0.01),人均可支配收入(t0.05/2,1=2.8303;P=.008),人均消费支出(PCCE;t0.05/2,1=2.752;P=0.01),和PCCE用于医疗保健(t0.05/2,1=2.5924;P=0.01)。地理加权回归模型表明,水痘累积发病率与城市人口比例之间存在正相关和空间异质性,人均国内生产总值,人均可支配收入,PCCE,在中国北方和东北地区具有较高的R2值。
    结论:通过局部空间自相关分析确定的水痘发作率的热点和HH聚类应被视为精确预防和控制水痘的关键领域。具体来说,广东,北京,天津市应优先进行水痘防控。这些发现提供了地理上精确和可视化的证据,以帮助确定有针对性的预防和控制的关键领域。
    BACKGROUND: The World Health Organization declared mpox an international public health emergency. Since January 1, 2022, China has been ranked among the top 10 countries most affected by the mpox outbreak globally. However, there is a lack of spatial epidemiological studies on mpox, which are crucial for accurately mapping the spatial distribution and clustering of the disease.
    OBJECTIVE: This study aims to provide geographically accurate visual evidence to determine priority areas for mpox prevention and control.
    METHODS: Locally confirmed mpox cases were collected between June and November 2023 from 31 provinces of mainland China excluding Taiwan, Macao, and Hong Kong. Spatiotemporal epidemiological analyses, including spatial autocorrelation and regression analyses, were conducted to identify the spatiotemporal characteristics and clustering patterns of mpox attack rate and its spatial relationship with sociodemographic and socioeconomic factors.
    RESULTS: From June to November 2023, a total of 1610 locally confirmed mpox cases were reported in 30 provinces in mainland China, resulting in an attack rate of 11.40 per 10 million people. Global spatial autocorrelation analysis showed that in July (Moran I=0.0938; P=.08), August (Moran I=0.1276; P=.08), and September (Moran I=0.0934; P=.07), the attack rates of mpox exhibited a clustered pattern and positive spatial autocorrelation. The Getis-Ord Gi* statistics identified hot spots of mpox attack rates in Beijing, Tianjin, Shanghai, Jiangsu, and Hainan. Beijing and Tianjin were consistent hot spots from June to October. No cold spots with low mpox attack rates were detected by the Getis-Ord Gi* statistics. Local Moran I statistics identified a high-high (HH) clustering of mpox attack rates in Guangdong, Beijing, and Tianjin. Guangdong province consistently exhibited HH clustering from June to November, while Beijing and Tianjin were identified as HH clusters from July to September. Low-low clusters were mainly located in Inner Mongolia, Xinjiang, Xizang, Qinghai, and Gansu. Ordinary least squares regression models showed that the cumulative mpox attack rates were significantly and positively associated with the proportion of the urban population (t0.05/2,1=2.4041 P=.02), per capita gross domestic product (t0.05/2,1=2.6955; P=.01), per capita disposable income (t0.05/2,1=2.8303; P=.008), per capita consumption expenditure (PCCE; t0.05/2,1=2.7452; P=.01), and PCCE for health care (t0.05/2,1=2.5924; P=.01). The geographically weighted regression models indicated a positive association and spatial heterogeneity between cumulative mpox attack rates and the proportion of the urban population, per capita gross domestic product, per capita disposable income, and PCCE, with high R2 values in north and northeast China.
    CONCLUSIONS: Hot spots and HH clustering of mpox attack rates identified by local spatial autocorrelation analysis should be considered key areas for precision prevention and control of mpox. Specifically, Guangdong, Beijing, and Tianjin provinces should be prioritized for mpox prevention and control. These findings provide geographically precise and visualized evidence to assist in identifying key areas for targeted prevention and control.
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  • 文章类型: Journal Article
    自2022年5月以来,非洲以外的几个国家经历了多种猴痘病毒(MPXV)相关疾病。在本研究中,在来自意大利普通人群的两组受试者中评估了抗MPXV和抗牛痘病毒(VACV)中和抗体应答(其中一半在1980年WHO推荐的天花疫苗接种结束前出生,另一半在之后出生).在VACV疫苗接种中断之前出生的个体队列中观察到更高的滴度(针对MPXV或VACV)。观察到VACV和MPXV抗体水平之间的关联,提示天花疫苗可能对MPXV感染具有一定程度的交叉保护作用.这项研究的结果突出了对评估的正痘病毒的低水平免疫力,尤其是年轻人,提倡引入VACV或MPXV特异性疫苗,以防猴痘疾病爆发。
    Since May 2022, several countries outside of Africa experienced multiple clusters of monkeypox virus (MPXV)-associated disease. In the present study, anti-MPXV and anti-vaccinia virus (VACV) neutralizing antibody responses were evaluated in two cohorts of subjects from the general Italian population (one half born before the WHO-recommended end of smallpox vaccination in 1980, the other half born after). Higher titers (either against MPXV or VACV) were observed in the cohort of individuals born before the interruption of VACV vaccination. An association between VACV and MPXV antibody levels was observed, suggesting that the smallpox vaccination may confer some degree of cross-protection against MPXV infection. Results from this study highlight low levels of immunity toward the assessed Orthopoxviruses, especially in young adults, advocating the introduction of a VACV- or MPXV-specific vaccine in case of resurgence of monkeypox disease outbreaks.
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  • 文章类型: Journal Article
    了解感染动态对于预防猴痘病毒(MPXV)感染的公共卫生措施很重要。在这里,每两到三天收集77例急性MPXV感染(HIV合并感染:N=42)的多个身体部位和环境污染物的样本,并用于检测MPXVDNA,表面蛋白特异性抗体和中和滴度。皮损显示MPXVDNA阳性率100%,其次是直肠(88.16%),唾液(83.78%)和口咽(78.95%)。口咽阳性率在症状发作后7天迅速下降(d.p.o),而直肠和唾液保持与皮肤病变相似的阳性率。皮肤损伤间的病毒动力学相似,唾液和口咽,在大约6d.p.o.的峰值。相比之下,直肠中的病毒水平在症状开始时达到峰值,此后迅速下降。52.66%的环境微生物拭子对MPXVDNA呈阳性,空调出风口阳性率最高(69.89%)。检测到针对A29L(100%)和H3L(94.74%)的高血清阳性,而IgG终点滴度和中和滴度之间的相关性仅在A29L中发现。大多数指标在HIV和非HIV参与者之间是相似的,而HIV和直肠炎与直肠较高的病毒载量有关。
    Understanding of infection dynamics is important for public health measures against monkeypox virus (MPXV) infection. Herein, samples from multiple body sites and environmental fomites of 77 acute MPXV infections (HIV co-infection: N = 42) were collected every two to three days and used for detection of MPXV DNA, surface protein specific antibodies and neutralizing titers. Skin lesions show 100% positivity rate of MPXV DNA, followed by rectum (88.16%), saliva (83.78%) and oropharynx (78.95%). Positivity rate of oropharynx decreases rapidly after 7 days post symptom onset (d.p.o), while the rectum and saliva maintain a positivity rate similar to skin lesions. Viral dynamics are similar among skin lesions, saliva and oropharynx, with a peak at about 6 d.p.o. In contrast, viral levels in the rectum peak at the beginning of symptom onset and decrease rapidly thereafter. 52.66% of environmental fomite swabs are positive for MPXV DNA, with highest positivity rate (69.89%) from air-conditioning air outlets. High seropositivity against A29L (100%) and H3L (94.74%) are detected, while a correlation between IgG endpoint titers and neutralizing titers is only found for A29L. Most indexes are similar between HIV and Non-HIV participants, while HIV and rectitis are associated with higher viral loads in rectum.
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  • 文章类型: Journal Article
    在2022年多国猴痘流行中,男男性行为者和艾滋病毒携带者受到的影响不成比例。天花疫苗可以诱导抗猴痘病毒(MPXV)的交叉反应抗体,并降低感染风险。关于HIV感染者中由历史天花疫苗接种诱导的MPXV抗体的数据很少。在这项观察性研究中,从深圳的艾滋病毒携带者和非艾滋病毒携带者身上采集血浆样本,中国。我们使用酶联免疫吸附测定法测量了与痘苗病毒的两种代表性蛋白(VACV;A27L和A33R)和MPXV的同源蛋白(A29L和A35R)结合的抗体。我们比较了有和没有艾滋病毒的人之间这些抗体的水平。根据1981年中国停止天花疫苗接种的出生年份进行了分层分析。对677名HIV感染者和746名HIV感染者的血浆样本进行了测试。在四种抗体中鉴定出一致的模式,无论艾滋病毒状况如何。在1981年之前出生的人中可检测到由历史性天花疫苗接种诱导的VACV抗原反应性和MPXV抗原反应性抗体,并且抗体水平在1981年或之后达到最低点。天花疫苗诱导的抗体水平在艾滋病毒感染者和没有艾滋病毒的人之间是相当的。我们的发现表明,由于停止了天花疫苗接种,有和没有艾滋病毒的人针对MPXV的抗体水平都有所下降。
    Men who have sex with men and people living with HIV are disproportionately affected in the 2022 multi-country monkeypox epidemic. The smallpox vaccine can induce cross-reactive antibodies against the monkeypox virus (MPXV) and reduce the risk of infection. Data on antibodies against MPXV induced by historic smallpox vaccination in people with HIV are scarce. In this observational study, plasma samples were collected from people living with and without HIV in Shenzhen, China. We measured antibodies binding to two representative proteins of vaccinia virus (VACV; A27L and A33R) and homologous proteins of MPXV (A29L and A35R) using an enzyme-linked immunosorbent assay. We compared the levels of these antibodies between people living with and without HIV. Stratified analyses were performed based on the year of birth of 1981 when the smallpox vaccination was stopped in China. Plasma samples from 677 people living with HIV and 746 people without HIV were tested. A consistent pattern was identified among the four antibodies, regardless of HIV status. VACV antigen-reactive and MPXV antigen-reactive antibodies induced by historic smallpox vaccination were detectable in the people born before 1981, and antibody levels reached a nadir during or after 1981. The levels of smallpox vaccine-induced antibodies were comparable between people living with HIV and those without HIV. Our findings suggest that the antibody levels against MPXV decreased in both people living with and without HIV due to the cessation of smallpox vaccination.
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  • 文章类型: Journal Article
    当人类通过新型严重急性呼吸道综合症冠状病毒-2(SARS-CoV-2)对抗正在进行的COVID-19大流行时,它同时见证了水痘病毒(MPXV)的出现,该病毒在全球范围内传播,并可能导致另一场大流行。尽管MPXV已经存在了50多年,大多数人类病例都来自西非和中非地区,该疾病最近也在非流行地区报告,影响了50多个国家。控制MPXV的传播很重要,因为它有全球传播的潜在危险,导致严重的发病率和死亡率。文章重点介绍了变速器动力学,人畜共患病的潜力,MPXV感染的并发症和缓解策略,最后提出了更好的管理的“一种健康”方法,控制和预防。对数据的文献计量分析扩展了对研究趋势的理解并提供了线索,全球传播,以及需要改进关键研究和医疗保健干预措施。全球出版的与水痘相关的文献与流行地区/发生地区并不一致,理想情况下应该是这种情况。需要弥合研究工作地点与疾病流行中心之间的人口和地理差距,以便将研究成果更多有效地转化为公共医疗系统。这是建议。
    As the mankind counters the ongoing COVID-19 pandemic by the novel severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), it simultaneously witnesses the emergence of mpox virus (MPXV) that signals at global spread and could potentially lead to another pandemic. Although MPXV has existed for more than 50 years now with most of the human cases being reported from the endemic West and Central African regions, the disease is recently being reported in non-endemic regions too that affect more than 50 countries. Controlling the spread of MPXV is important due to its potential danger of a global spread, causing severe morbidity and mortality. The article highlights the transmission dynamics, zoonosis potential, complication and mitigation strategies for MPXV infection, and concludes with suggested \'one health\' approach for better management, control and prevention. Bibliometric analyses of the data extend the understanding and provide leads on the research trends, the global spread, and the need to revamp the critical research and healthcare interventions. Globally published mpox-related literature does not align well with endemic areas/regions of occurrence which should ideally have been the scenario. Such demographic and geographic gaps between the location of the research work and the endemic epicentres of the disease need to be bridged for greater and effective translation of the research outputs to pubic healthcare systems, it is suggested.
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