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Climate and mammal host community characteristics drive tuberculosis maintenance at the wildlife livestock interface 气候和哺乳动物宿主群落特征驱动了野生动物和牲畜界面的结核病维持
IF 4.5 2区 医学 Q1 INFECTIOUS DISEASES Pub Date : 2026-01-16 DOI: 10.1016/j.onehlt.2026.101334
Alberto Perelló , José Sánchez-Cesteros , Patricia Barroso , David Relimpio , Víctor Lizana , Ana Balseiro , Christian Gortázar , Nuno Santos
Animal tuberculosis (TB) is a zoonosis maintained by various domestic and wild mammals in complex episystems. Higher competent host species richness at the community level promotes infection maintenance. Consequently, it has been proposed to go beyond the classic one- or two-host systems, where only certain species were considered maintenance hosts, to address “maintenance communities” of multiple hosts with different levels of contribution to infection maintenance. A further factor in TB epidemiology is the environment. In the Iberian Peninsula, water availability has a strong influence on TB in wildlife and livestock. However, the relative importance of any single host species, the richness and network of interactions in each community, or the environment in driving infection maintenance is unknown. We addressed this complexity using structural equation modelling (SEM), a framework to analyze complex relationships between multiple variables. We analyzed 18 multi-host communities and assessed the effects of climate (humidity), mammal diversity, and host (cattle, wild boar, and red deer) abundance and connectedness on TB prevalence in wild boar and cattle. Red deer abundance and connectedness and wild boar connectedness were positively correlated with TB prevalence in wild boar. Humidity was negatively correlated with TB prevalence in wild boar and cattle. Red deer connectedness and the diversity of the mammal community were positively correlated with TB prevalence in cattle, while wild boar abundance was negatively correlated. Through SEM, we integrated host abundance with community network parameters, mammal diversity, and climate to reveal the drivers of TB maintenance in multi-host systems. Climate effects were stronger on cattle TB than on wild boar TB and these effects were superimposed to other risk factors such as red deer abundance and host community structure. Our findings suggest that TB eradication in cattle could be particularly challenging in regions with high competent host species richness and arid climate, with implications for livestock health, economic sustainability of cattle farms, and reduction of zoonotic risk in rural areas.
动物结核病(TB)是一种由各种家养和野生哺乳动物在复杂的系统中维持的人畜共患病。在群落水平上,较高的寄主物种丰富度促进了感染的维持。因此,有人建议超越经典的单或双宿主系统,即只有某些物种被认为是维持宿主,以解决对感染维持有不同程度贡献的多个宿主的“维持群落”。结核病流行病学的另一个因素是环境。在伊比利亚半岛,水的供应对野生动物和牲畜的结核病有很大影响。然而,任何单一宿主物种的相对重要性,每个群落的相互作用的丰富度和网络,或驱动感染维持的环境都是未知的。我们使用结构方程建模(SEM)来解决这种复杂性,这是一种分析多个变量之间复杂关系的框架。我们分析了18个多宿主社区,并评估了气候(湿度)、哺乳动物多样性、宿主(牛、野猪和马鹿)丰度和连通性对野猪和牛结核病患病率的影响。马鹿丰度、连通性和野猪连通性与野猪结核病患病率呈正相关。湿度与野猪和牛结核病患病率呈负相关。马鹿连通性和哺乳动物群落多样性与牛结核病患病率呈正相关,而野猪丰度与牛结核病患病率呈负相关。通过扫描电镜,我们将宿主丰度与群落网络参数、哺乳动物多样性和气候相结合,揭示了多宿主系统中结核病维持的驱动因素。气候对牛结核病的影响强于对野猪结核病的影响,这些影响叠加到马鹿数量和宿主群落结构等其他风险因素上。我们的研究结果表明,在宿主物种丰富度高且气候干旱的地区,牛的结核病根除可能特别具有挑战性,这对牲畜健康、牛场的经济可持续性以及农村地区人畜共患病风险的降低具有影响。
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引用次数: 0
Modelling land use-induced foraging distributions of flying foxes and emerging spillover risks 模拟土地利用引起的飞狐觅食分布和新出现的溢出风险
IF 4.5 2区 医学 Q1 INFECTIOUS DISEASES Pub Date : 2026-01-14 DOI: 10.1016/j.onehlt.2026.101333
Erin Stafford , Åke Brännström , Kyrre Kausrud , Henrik Sjödin
Despite their critical role as reservoir hosts for many zoonotic diseases, the impact of land-use and land-cover changes (LCLUC) on flying foxes' interactions with humans remains unclear, posing a potential public health risk. To address this, we apply optimal foraging theory and individual-based modelling to simulate flying-fox movement and population dynamics under various LCLUC scenarios. After validating our model against available data, we analyze the effects of agriculturalization, urbanization, forest fragmentation, and reforestation on flying-fox densities across synthetic landscapes of urban, forest, orchard, and water-body habitats. Our findings indicate that habitat disruption—particularly fragmentation through urbanization—significantly increases the risk of zoonotic spillover events by increasing contacts between species. Scenarios of forest degradation reveal that ecologically degraded forest environments can further exacerbate this risk. Additionally, we find that reforestation can alleviate spillover risk. These results underscore the importance of conservation and habitat restoration as critical strategies for mitigating zoonotic disease transmission.
尽管它们作为许多人畜共患疾病的宿主发挥着关键作用,但土地利用和土地覆盖变化(LCLUC)对狐蝠与人类相互作用的影响尚不清楚,构成潜在的公共卫生风险。为了解决这一问题,我们应用最优觅食理论和基于个体的模型来模拟不同LCLUC情景下飞狐的运动和种群动态。在利用现有数据验证我们的模型之后,我们分析了农业化、城市化、森林破碎化和再造林对城市、森林、果园和水体栖息地合成景观中飞狐密度的影响。我们的研究结果表明,栖息地的破坏——特别是城市化带来的破碎化——通过增加物种之间的接触,显著增加了人畜共患病溢出事件的风险。森林退化情景表明,生态退化的森林环境会进一步加剧这种风险。此外,我们发现再造林可以缓解溢出风险。这些结果强调了保护和栖息地恢复作为减轻人畜共患疾病传播的关键策略的重要性。
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引用次数: 0
Assessing the impact of vaccination and behavioural change on Mpox transmission in high-risk groups in the Democratic Republic of Congo using an age-structured mathematical model 使用年龄结构数学模型评估疫苗接种和行为改变对刚果民主共和国高危人群麻疹传播的影响
IF 4.5 2区 医学 Q1 INFECTIOUS DISEASES Pub Date : 2026-01-14 DOI: 10.1016/j.onehlt.2026.101324
Andrew Omame , Nicola Luigi Bragazzi , Ali Asgary , Chigozie Louisa J. Ugwu , Jude Dzevela Kong , Jianhong Wu , Woldegebriel Assefa Woldegerima
Mpox is a viral zoonotic disease that has gained global attention due to its recurrent outbreaks in endemic regions of Africa and beyond. The recent clade I outbreak in the Democratic Republic of the Congo (DRC) has been characterized by extensive transmission among children – particularly those under 15 years of age – and adults with elevated occupational risks, such as healthcare workers, sex workers, and hunters. Motivated by emerging evidence that vaccination alone may not explain the observed decline in mpox transmission across the DRC, and recognizing that behavioural modification is more feasible among adults, this study investigates the synergistic impact of vaccination and behaviour-driven contact reduction among high-risk adults within an age- and risk-structured modelling framework. The model stratifies the population into adults (high- and low-risk groups) and children. It incorporates vaccination for both adults and children, as well as behavioural adaptations (in the form of contact reduction) among high-risk adults. The model is calibrated to weekly reported mpox cases in the DRC from January 2024 to April 2025, from which key parameters are estimated. Scenario analyses reveal that among the adult population, behavioural change has a greater impact than vaccination in reducing mpox transmission. The model indicated that vaccination targeting children yielded the most significant effects, in comparison to either contact-reduction measures or immunization of adults. Moreover, our results indicate that initiating a 50% reduction in contact rates among high-risk adults approximately 20 weeks earlier yields an additional 20% decrease in the cumulative number of mpox cases, compared with implementing the same reduction concurrently with the vaccination intervention in the DRC. Given the current low vaccination coverage and supply constraints, our findings provide evidence-based guidance for optimizing vaccine allocation and prioritizing behavioural interventions among high-risk groups to prevent sustained transmission.
Mpox是一种病毒性人畜共患疾病,由于其在非洲及其他流行区域的反复暴发而引起全球关注。最近在刚果民主共和国暴发的第一进化支的特点是在儿童(特别是15岁以下儿童)和职业风险较高的成人(如卫生保健工作者、性工作者和猎人)中广泛传播。新出现的证据表明,仅接种疫苗可能无法解释在刚果民主共和国各地观察到的麻疹传播下降,并且认识到行为改变在成年人中更为可行,因此,本研究在年龄和风险结构建模框架内调查了疫苗接种和行为驱动的接触减少对高危成年人的协同影响。该模型将人口分为成人(高风险和低风险群体)和儿童。它包括成人和儿童的疫苗接种,以及高危成人的行为适应(以减少接触的形式)。该模型根据2024年1月至2025年4月期间刚果民主共和国每周报告的麻疹病例进行校准,并据此估计关键参数。情景分析表明,在成人人群中,行为改变在减少痘传播方面比接种疫苗具有更大的影响。该模型表明,与减少接触措施或成人免疫接种相比,针对儿童的疫苗接种效果最为显著。此外,我们的研究结果表明,与在刚果民主共和国同时实施疫苗接种干预措施相比,在大约20周之前开始将高危成年人的接触率降低50%,可使累计m痘病例数额外减少20%。鉴于目前疫苗接种覆盖率低和供应受限,我们的研究结果为优化疫苗分配和在高危人群中优先进行行为干预以防止持续传播提供了循证指导。
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引用次数: 0
Predicting the spatio-temporal risk of human tick-borne encephalitis (TBE) in Europe by combining hazard and exposure drivers 结合危险和暴露驱动因素预测欧洲人蜱传脑炎(TBE)的时空风险
IF 4.5 2区 医学 Q1 INFECTIOUS DISEASES Pub Date : 2026-01-13 DOI: 10.1016/j.onehlt.2026.101331
Francesca Dagostin , Diana Erazo , Giovanni Marini , Daniele Da Re , Valentina Tagliapietra , Maria Avdicova , Tatjana Avšič-Županc , Timothée Dub , Nahuel Fiorito , Nataša Knap , Céline M. Gossner , Jana Kerlik , Henna Mäkelä , Mateusz Markowicz , Roya Olyazadeh , Lukas Richter , William Wint , Maria Grazia Zuccali , Milda Žygutienė , Simon Dellicour , Annapaola Rizzoli

Background

Tick-borne encephalitis (TBE), caused by tick-borne encephalitis virus (TBEV), is a zoonotic disease that can lead to severe neurological symptoms. Given the increasing number of reported human TBE cases in Europe, we developed a spatio-temporal predictive model to infer the year-to-year probability of human TBE occurrence across Europe at the regional and municipal administrative levels.

Methods

We derived the distribution of human TBE cases at the regional level during 2017–2022 by using data provided by the European Centre for Disease Prevention and Control (ECDC), and at the municipal level by using data provided by Austria, Finland, Italy, Lithuania, and Slovakia. We modeled the probability of presence of human TBE cases at the regional and municipal levels for the period 2017–2025 with a boosted regression trees model, including covariates that affect both the natural hazard of virus circulation and human exposure to tick bites.

Findings

Areas with the highest probability of human TBE infections are located in central-eastern Europe, the Baltic states, and along the coastline of Nordic countries. Our results highlight a statistically significant rising trend in human TBE risk not only in north-western, but also in south-western European countries. Such areas are characterised by the presence of key tick host species, forested areas, intense human activity in forests, steep drops in late summer temperatures and high precipitation amounts during the driest months. The model showed good predictive performance, with a mean AUC of 0.84 (SD = 0.03), sensitivity of 0.83 (SD = 0.01), and specificity of 0.80 (SD = 0.01) at the regional level, and a mean AUC of 0.82 (SD = 0.03), sensitivity of 0.83 (SD = 0.01), and specificity of 0.69 (SD = 0.01) at the municipal level.

Interpretation

With ongoing climate and land use changes, the number of human TBE cases is likely to increase and spread into new areas. This highlights the importance of predictive models that can identify potential risk areas to support disease prevention and control efforts by public health authorities. The approach adopted, by fitting a One Health framework and leveraging lagged covaries, enables timely one-year-ahead predictions and enhances our current understanding of TBE risk under a global change scenario.
由蜱传脑炎病毒(TBEV)引起的蜱传脑炎(TBE)是一种人畜共患疾病,可导致严重的神经系统症状。鉴于欧洲报告的人类TBE病例数量不断增加,我们开发了一个时空预测模型,以推断欧洲区域和城市行政层面上人类TBE发生的年概率。方法利用欧洲疾病预防控制中心(ECDC)提供的数据,得出2017-2022年欧洲区域和奥地利、芬兰、意大利、立陶宛和斯洛伐克提供的市、市人群TBE病例分布情况。我们使用增强回归树模型,包括影响病毒传播自然危害和人类接触蜱虫叮咬的协变量,对2017-2025年期间区域和市级人类TBE病例存在的概率进行了建模。研究发现:人类感染脑炎的最高概率地区位于欧洲中东部、波罗的海国家和北欧国家的海岸线。我们的研究结果强调了人类TBE风险的统计学显著上升趋势,不仅在西北部,而且在欧洲西南部国家。这些地区的特点是存在主要蜱虫宿主物种、森林地区、森林中强烈的人类活动、夏末气温急剧下降以及最干旱月份的高降水量。该模型具有较好的预测效果,区域平均AUC为0.84 (SD = 0.03),灵敏度为0.83 (SD = 0.01),特异度为0.80 (SD = 0.01);市级平均AUC为0.82 (SD = 0.03),灵敏度为0.83 (SD = 0.01),特异度为0.69 (SD = 0.01)。随着气候和土地利用的持续变化,人类TBE病例的数量可能会增加并蔓延到新的地区。这突出了能够识别潜在风险领域的预测模型的重要性,以支持公共卫生当局的疾病预防和控制工作。采用的方法通过拟合“同一个健康”框架和利用滞后协方差,能够及时预测未来一年的情况,并增强我们目前对全球变化情景下的TBE风险的理解。
{"title":"Predicting the spatio-temporal risk of human tick-borne encephalitis (TBE) in Europe by combining hazard and exposure drivers","authors":"Francesca Dagostin ,&nbsp;Diana Erazo ,&nbsp;Giovanni Marini ,&nbsp;Daniele Da Re ,&nbsp;Valentina Tagliapietra ,&nbsp;Maria Avdicova ,&nbsp;Tatjana Avšič-Županc ,&nbsp;Timothée Dub ,&nbsp;Nahuel Fiorito ,&nbsp;Nataša Knap ,&nbsp;Céline M. Gossner ,&nbsp;Jana Kerlik ,&nbsp;Henna Mäkelä ,&nbsp;Mateusz Markowicz ,&nbsp;Roya Olyazadeh ,&nbsp;Lukas Richter ,&nbsp;William Wint ,&nbsp;Maria Grazia Zuccali ,&nbsp;Milda Žygutienė ,&nbsp;Simon Dellicour ,&nbsp;Annapaola Rizzoli","doi":"10.1016/j.onehlt.2026.101331","DOIUrl":"10.1016/j.onehlt.2026.101331","url":null,"abstract":"<div><h3>Background</h3><div>Tick-borne encephalitis (TBE), caused by tick-borne encephalitis virus (TBEV), is a zoonotic disease that can lead to severe neurological symptoms. Given the increasing number of reported human TBE cases in Europe, we developed a spatio-temporal predictive model to infer the year-to-year probability of human TBE occurrence across Europe at the regional and municipal administrative levels.</div></div><div><h3>Methods</h3><div>We derived the distribution of human TBE cases at the regional level during 2017–2022 by using data provided by the European Centre for Disease Prevention and Control (ECDC), and at the municipal level by using data provided by Austria, Finland, Italy, Lithuania, and Slovakia. We modeled the probability of presence of human TBE cases at the regional and municipal levels for the period 2017–2025 with a boosted regression trees model, including covariates that affect both the natural hazard of virus circulation and human exposure to tick bites.</div></div><div><h3>Findings</h3><div>Areas with the highest probability of human TBE infections are located in central-eastern Europe, the Baltic states, and along the coastline of Nordic countries. Our results highlight a statistically significant rising trend in human TBE risk not only in north-western, but also in south-western European countries. Such areas are characterised by the presence of key tick host species, forested areas, intense human activity in forests, steep drops in late summer temperatures and high precipitation amounts during the driest months. The model showed good predictive performance, with a mean AUC of 0.84 (SD = 0.03), sensitivity of 0.83 (SD = 0.01), and specificity of 0.80 (SD = 0.01) at the regional level, and a mean AUC of 0.82 (SD = 0.03), sensitivity of 0.83 (SD = 0.01), and specificity of 0.69 (SD = 0.01) at the municipal level.</div></div><div><h3>Interpretation</h3><div>With ongoing climate and land use changes, the number of human TBE cases is likely to increase and spread into new areas. This highlights the importance of predictive models that can identify potential risk areas to support disease prevention and control efforts by public health authorities. The approach adopted, by fitting a One Health framework and leveraging lagged covaries, enables timely one-year-ahead predictions and enhances our current understanding of TBE risk under a global change scenario.</div></div>","PeriodicalId":19577,"journal":{"name":"One Health","volume":"22 ","pages":"Article 101331"},"PeriodicalIF":4.5,"publicationDate":"2026-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145977279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Key aspects of One Health governance in the European Union 欧洲联盟“同一个健康”治理的主要方面
IF 4.5 2区 医学 Q1 INFECTIOUS DISEASES Pub Date : 2026-01-12 DOI: 10.1016/j.onehlt.2026.101325
Fergal Donnelly , Nikolaos I. Stilianakis
One Health governance involves the integrated coordination and management of policies, programs, and activities addressing the interconnected health of humans, animals, and the environment. Its development and implementation necessitate collaboration and coordination across various sectors and require significant resources. Consequently, key performance indicators are essential for monitoring progress and informing adaptations. Additionally, integrative surveillance systems encompassing human, animal, and environmental health sources, along with digital technologies and interoperable data systems, are crucial components for effective governance. These elements collectively foster health and well-being in a holistic manner.
“一体健康”治理涉及解决人类、动物和环境相互关联的健康问题的政策、规划和活动的综合协调和管理。它的发展和实施需要各部门之间的协作和协调,并需要大量资源。因此,关键绩效指标对于监测进展和通报适应情况至关重要。此外,包括人类、动物和环境卫生来源的综合监测系统,以及数字技术和可互操作的数据系统,是有效治理的关键组成部分。这些因素以整体的方式共同促进健康和福祉。
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引用次数: 0
Turning urban wildlife mortality into a surveillance tool: Detection of vector-borne pathogens in carcasses of hedgehogs, squirrels, and blackbirds 将城市野生动物死亡率转化为监测工具:在刺猬、松鼠和黑鹂尸体中检测媒介传播的病原体
IF 4.5 2区 医学 Q1 INFECTIOUS DISEASES Pub Date : 2026-01-12 DOI: 10.1016/j.onehlt.2026.101328
Karolina Volfová , Václav Hönig , Michal Houda , Petr Papežík , Paulina Maria Lesiczka , Manoj Fonville , Hein Sprong , Barbora Černá Bolfíková , Pavel Hulva , Daniel Růžek , Lada Hofmannová , Jan Votýpka , David Modrý
Tick-borne zoonoses pose a major challenge to human and animal health, driving efforts to monitor the distribution, intensity, and diversity of their causative agents. Within the One Health framework, which links human, animal, and environmental health, integrated surveillance strategies are increasingly needed. However, most studies focus on tick vectors, while vertebrate reservoirs are often overlooked due to labour-intensive sampling, the need for specialized skills, and legislative or species protection constraints.
This study evaluated whether carcasses of accidentally killed wildlife (primarily roadkill) can serve as a source of biological material for vector-borne pathogen surveillance, with a focus on urban habitats due to their public health relevance. Hedgehogs, squirrels, and blackbirds were selected as synanthropic species that thrive in cities, are commonly infested by ticks, and act as hosts for zoonotic tick-borne pathogens (TBPs).
A total of 268 carcasses (125 hedgehogs, 55 squirrels, and 88 blackbirds) were collected across multiple Czech cities with public assistance. Overall, 1836 tissue samples were analyzed using multiplex real-time PCR assays targeting over ten microorganisms. Detection efficiency was compared across tissues, with ear and skin consistently the most reliable and versatile sample types. Individual pathogen-host-tissue combinations reached 65–93% efficiency, highlighting the value of multi-tissue sampling. The most prevalent TBPs detected were Anaplasma phagocytophilum, Borrelia burgdorferi s.l., Bartonella spp., and Rickettsia helvetica.
In conclusion, carcasses of accidentally killed urban wildlife provide a practical and valuable resource for TBP surveillance, complementing vector-focused methods. This approach supports One Health principles by integrating wildlife monitoring into urban disease surveillance efforts.
蜱传人畜共患病对人类和动物健康构成重大挑战,促使人们努力监测其病原体的分布、强度和多样性。在将人类、动物和环境卫生联系起来的“同一个健康”框架内,越来越需要综合监测战略。然而,大多数研究集中在蜱虫媒介上,而脊椎动物宿主往往被忽视,这是由于劳动密集型的采样、对专业技能的需求以及立法或物种保护的限制。本研究评估了意外死亡的野生动物尸体(主要是道路死亡的动物)是否可以作为媒介传播病原体监测的生物材料来源,重点关注城市栖息地,因为它们与公共卫生有关。刺猬、松鼠和黑鹂被选为在城市中茁壮成长的共生物种,它们通常被蜱虫感染,并作为人畜共患蜱传病原体(tps)的宿主。在公共援助下,在捷克多个城市共收集了268具尸体(125只刺猬,55只松鼠和88只黑鹂)。总的来说,1836个组织样本使用多重实时PCR分析,针对超过10种微生物。检测效率跨组织进行比较,耳朵和皮肤始终是最可靠和通用的样本类型。单个病原体-宿主-组织组合的效率达到65-93%,突出了多组织采样的价值。最常见的TBPs为嗜吞噬细胞无原体、伯氏疏螺旋体、巴尔通体和helvetica立克次体。总之,意外死亡的城市野生动物尸体为TBP监测提供了实用和有价值的资源,补充了以媒介为重点的方法。这种方法通过将野生动物监测纳入城市疾病监测工作来支持“同一个健康”原则。
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引用次数: 0
The ecology of biting: buzzing through the main ecological, environmental and biological drivers of mosquito-borne diseases 叮咬生态学:通过蚊媒疾病的主要生态、环境和生物驱动因素
IF 4.5 2区 医学 Q1 INFECTIOUS DISEASES Pub Date : 2026-01-12 DOI: 10.1016/j.onehlt.2026.101326
Elisa Fesce , Josué Martínez-de la Puente , Martina Ferraguti
Mosquito populations are shaped by a variety of environmental drivers, including temperature fluctuations, habitat alterations, and physicochemical factors. These drivers impact mosquito community composition, influencing the spread of vector-borne diseases. Species differ in their sensitivity to environmental changes, with some thriving in anthropogenic landscapes and others exhibit preferences for natural habitats. Abiotic factors such as temperature, water pH, salinity, and dissolved oxygen strongly affect larval survival and development, while interspecific competition among larvae shapes community structure and species abundance, impacting pathogen transmission. Mosquito feeding preferences further influence pathogen transmission by determining host selection; with opportunistic mosquito species that can act as bridge vectors between humans, domestic animals, and wildlife, facilitating the spread of zoonotic pathogens. In this respect, understanding the dynamics of zoonotic pathogens requires a One Health approach that integrates human, animal and environmental health. Mathematical models, in particular, draw on ecological, environmental and biological factors to elucidate mosquito population dynamics and disease transmission, reinforcing the importance of adopting an integrated perspective. We examine the key environmental, ecological, and biological factors shaping mosquito community composition, and highlight the role of mathematical modelling in clarifying how these factors influence mosquito-borne disease transmission. Our findings emphasize that vector surveillance and control programs should target specific vector species in relevant habitats to optimize effectiveness and reduce economic costs.
蚊子的数量受到各种环境因素的影响,包括温度波动、栖息地改变和物理化学因素。这些驱动因素影响蚊子群落组成,影响媒介传播疾病的传播。物种对环境变化的敏感性各不相同,一些物种在人为景观中茁壮成长,而另一些物种则表现出对自然栖息地的偏好。温度、水体pH、盐度、溶解氧等非生物因素强烈影响幼虫的生存和发育,而幼虫之间的种间竞争塑造了群落结构和物种丰度,影响了病原体的传播。蚊子的取食偏好通过决定宿主选择进一步影响病原体的传播;机会性蚊子可以作为人类、家畜和野生动物之间的桥梁媒介,促进人畜共患病原体的传播。在这方面,了解人畜共患病原体的动态需要一个整合人类、动物和环境健康的“同一个健康”方法。数学模型尤其利用生态、环境和生物因素来阐明蚊子种群动态和疾病传播,从而加强了采用综合观点的重要性。我们研究了影响蚊子群落组成的关键环境、生态和生物因素,并强调了数学模型在阐明这些因素如何影响蚊媒疾病传播方面的作用。我们的研究结果强调,媒介监测和控制计划应针对相关栖息地的特定媒介物种,以优化效果并降低经济成本。
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引用次数: 0
Characteristics of Escherichia coli co-harboring blaNDM and mcr-1 genes from market chicken meat 市售鸡肉中共携带blaNDM和mcr-1基因的大肠杆菌的特性
IF 4.5 2区 医学 Q1 INFECTIOUS DISEASES Pub Date : 2026-01-12 DOI: 10.1016/j.onehlt.2026.101329
Zhiyu Li , Biao Tang , Huafeng Jian , Xiaoqian Long , Fengcheng Miao , Yao Shen , Tong Jiang , Yue Yang , Hua Yang , Lin Teng , Wenbin Zheng , Jiangang Ma
Carbapenems and colistin resistance in Enterobacterales is a global public health issue. In this study, we isolated seven Escherichia coli strains co-resistant to colistin and meropenem from market chicken meat in Zhejiang Province, China. Antimicrobial susceptibility testing showed that these strains exhibited extensive antimicrobial resistance, with a 100% multidrug-resistant rate. All seven strains harbored both blaNDM and mcr-1 genes, along with various additional resistance genes. Among the seven E. coli strains, the harboring blaNDM plasmids were IncX3 (4/7) and IncB/O/K/Z (3/7) plasmids, and the mcr-1 gene was primarily identified on IncI2 (3/7) plasmids. Notably, most plasmids harboring the blaNDM and mcr genes can be transferred to recipient bacteria via conjugation, highlighting their role as important vehicles for the dissemination of resistance genes. Meanwhile, we also identified a novel blaNDM variant, designated blaNDM-85, which exhibited amino acid substitutions E152K and M154L compared to blaNDM-1. Through the cloning and expression of blaNDM-1 to blaNDM-10 and blaNDM-85 genes, it was found that the resistance levels of blaNDM-85 were significantly higher than other blaNDM variants. It should be noted that the spread of blaNDM-85 will further increase the difficulty of treating clinically resistant bacteria. Our findings highlight the detection of blaNDM and mcr-1 producing E. coli in market chicken meat as a potential public health risk. And the urgent need for enhanced surveillance and intervention strategies to mitigate the spread of these multidrug-resistant pathogens in the food chain.
肠杆菌对碳青霉烯类和粘菌素的耐药性是一个全球性的公共卫生问题。本研究从浙江省市售鸡肉中分离出7株对粘菌素和美罗培南共耐药的大肠杆菌。药敏试验表明,这些菌株表现出广泛的耐药性,多重耐药率为100%。所有7个菌株都携带blaNDM和mcr-1基因,以及各种额外的抗性基因。在7株大肠杆菌中,携带blaNDM的质粒为IncX3(4/7)和IncB/O/K/Z(3/7)质粒,mcr-1基因主要在inc2(3/7)质粒上鉴定。值得注意的是,大多数含有blaNDM和mcr基因的质粒可以通过结合转移到受体细菌中,这突出了它们作为抗性基因传播的重要载体的作用。同时,我们还鉴定出一种新的blaNDM变体,命名为blaNDM-85,与blaNDM-1相比,它具有E152K和M154L的氨基酸替换。通过blaNDM-1对blaNDM-10和blaNDM-85基因的克隆和表达,发现blaNDM-85的抗性水平明显高于其他blaNDM变异。值得注意的是,blaNDM-85的扩散将进一步增加临床耐药菌的治疗难度。我们的研究结果强调,在市场鸡肉中检测到blaNDM和产生mcr-1的大肠杆菌是一种潜在的公共卫生风险。迫切需要加强监测和干预战略,以减轻这些耐多药病原体在食物链中的传播。
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引用次数: 0
One health and community health workers: Bridging the gap in global health resilience 一名卫生和社区卫生工作者:弥合全球卫生复原力的差距
IF 4.5 2区 医学 Q1 INFECTIOUS DISEASES Pub Date : 2026-01-12 DOI: 10.1016/j.onehlt.2026.101330
Claude Mambo Muvunyi , Pierre Gashema , Emmanuel Edwar Siddig , Jean de Dieu Harelimana , Jean Kaseya
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引用次数: 0
Human 3D liver spheroids support productive infection of a novel tick-borne phenuivirus 人类三维肝球体支持一种新型蜱传苯病毒的生产性感染
IF 4.5 2区 医学 Q1 INFECTIOUS DISEASES Pub Date : 2026-01-10 DOI: 10.1016/j.onehlt.2026.101321
Wenbo Xu , Liyan Sui , Nan Liu , Lesley Bell-Sakyi , Yicheng Zhao , Yuanzhi Wang , Yinghua Zhao , Changfeng Zhu , Quan Liu
The identification of novel tick-borne viruses, such as Mukawa virus (MKWV), underscores a growing need to assess their potential public health risks. In this study, we isolated the MKWV strain HLJ1 from Ixodes persulcatus ticks. While this initial isolate demonstrated limited replication in mammalian cell lines and mice, it productively infected human primary cell-derived 3D spheroids. Serial passaging in this model significantly enhanced viral titers, suggesting adaptive evolution. The resulting adapted strain exhibited increased virulence, causing pronounced cytopathic effects in Vero cells, infecting diverse mammalian cell types, and leading to 100% mortality in suckling mice, with associated liver inflammation and damage. These pathogenic outcomes were recapitulated in the 3D human liver spheroids, which showed impaired cellular synthetic functions, cell death, and heightened inflammatory responses following infection. Epidemiological screening of 145 serum samples from tick-bitten patients in Northeastern China revealed low but detectable exposure, with 1.4% positive for MKWV RNA, 4.8% for IgG antibodies, and 3.4% for neutralizing antibodies. Collectively, our findings integrate a novel human-relevant 3D culture system with field surveillance to highlight the potential risks of MKWV to human health and provide a model framework for evaluating emerging tick-borne viruses.
诸如Mukawa病毒(MKWV)等新型蜱传病毒的发现,突显出越来越需要评估其潜在的公共卫生风险。本研究从过硫蜱中分离出MKWV株HLJ1。虽然这种初始分离物在哺乳动物细胞系和小鼠中的复制能力有限,但它能有效地感染人类原代细胞衍生的3D球体。该模型的连续传代显著提高了病毒滴度,提示适应性进化。由此产生的适应菌株表现出更高的毒力,在Vero细胞中引起明显的细胞病变,感染多种哺乳动物细胞类型,并导致哺乳小鼠100%的死亡率,并伴有相关的肝脏炎症和损伤。这些致病结果在三维人肝球体中得到了概括,显示出细胞合成功能受损、细胞死亡和感染后炎症反应加剧。对中国东北地区145例蜱叮咬患者的血清样本进行流行病学筛查,结果显示暴露程度低但可检测到,MKWV RNA阳性率为1.4%,IgG抗体阳性率为4.8%,中和抗体阳性率为3.4%。总的来说,我们的研究结果将一种新型的与人类相关的3D培养系统与现场监测相结合,以突出MKWV对人类健康的潜在风险,并为评估新出现的蜱传病毒提供了一个模型框架。
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引用次数: 0
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One Health
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