旅行监测揭示了登革热病毒的动态和在加勒比地区的引入
Emma Taylor-Salmon1,2, Verity Hill3, Lauren M Paul4
1Department of Pediatrics, Yale School of Medicine, New Haven, CT, USA. emma.taylor-salmon@yale.edu.
Nature communications
|April 25, 2024
概括
加勒比地区的登革热病毒 (DENV) 爆发正在上升,亚洲发现了新的DENV-3引入. 加强旅行者监控对于了解区域传播和公共卫生威胁至关重要.
科学领域:
- 流行病学 流行病学
- 病毒学 病毒学
- 基因组流行病学 基因组流行病学
背景情况:
- 登革热是一个重要的全球公共卫生问题,在加勒比地区病例不断增加和频繁爆发.
- 该地区经历了所有四种登革热病毒 (DENV) 血清型的高度流行,增加了严重疾病的风险.
- 在加勒比海岛屿进行不一致的监测,阻碍了对登革热流行病学的准确理解.
研究的目的:
- 重建2009-2022年加勒比地区登革热病毒爆发动态,血清型循环和传播模式.
- 调查最近DENV-3引入对区域流行病学的影响.
- 评估旅行监控对监测DENV引入的有用性.
主要方法:
- 利用旅行监控数据来追踪感染的旅客.
- 采用基因组流行病学来分析DENV血清型多样性和传播.
- 重建了历史爆发动态和传播模式.
主要成果:
- 确定了DENV-3最近从亚洲向加勒比地区引入的两种病毒.
- 在古巴发现了一个未被报告的大型DENV-3疫情.
- 证明了跨岛屿同步爆发可以由不同的DENV血清型驱动.
结论:
- 对感染旅行者的监测提供了对DENV引入和传播的宝贵见解,特别是在局部监测有限的地区.
- 最近DENV-3的引入对加勒比地区构成了潜在的重大公共卫生威胁.
- 需要改进区域监测战略,以便在加勒比地区有效管理登革热.
相关概念视频
Infection
When a pathogen enters the body and reproduces, it can cause an infection, damage body cells, and cause illness symptoms that eventually lead to disease. Therefore, its prevention requires breaking the chain of infection.
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...
Steps in Outbreak Investigation
In the ever-evolving field of public health, statistical analysis serves as a cornerstone for understanding and managing disease outbreaks. By leveraging various statistical tools, health professionals can predict potential outbreaks, analyze ongoing situations, and devise effective responses to mitigate impact. For that to happen, there are a few possible stages of the analysis:
Principles of Disease Surveillance
Disease surveillance is the systematic collection, analysis, and interpretation of health data essential to the planning, implementation, and evaluation of public health practice. This process integrates data dissemination to entities responsible for preventing and controlling disease, injury, and disability. Surveillance systems provide crucial information for action, helping public health authorities make informed decisions to manage and prevent outbreaks, ensure public safety, optimize...
Infectious Diseases and Their Occurrence
Infectious diseases appear in populations through various transmission patterns, influenced by pathogen characteristics, population immunity, environmental conditions, and social behavior. Understanding these patterns is essential for effective public health surveillance and intervention. These categories—sporadic, outbreak, epidemic, pandemic, and endemic—help frame the nature and scope of disease events.Sporadic diseases occur irregularly and infrequently, without a predictable temporal or...
Reservoir of Infection
Infectious diseases arise from intricate interactions between pathogens and their reservoirs. A reservoir of infection refers to the natural habitat where a pathogen lives, grows, and multiplies, serving as a continual source of infection. Reservoirs are broadly classified as either living or nonliving, and each plays a unique role in disease transmission, significantly influencing public health interventions and control strategies.Humans act as reservoirs for a wide array of pathogens,...
Investigation of Disease Outbreaks
Multistate foodborne outbreaks pose significant public health risks and require meticulous investigation to identify sources and implement control measures. The Centers for Disease Control and Prevention (CDC) utilizes a dynamic seven-step process for these investigations, integrating data from laboratories, interviews, and environmental assessments to protect public health.Outbreak Detection: The detection of multistate outbreaks typically begins with PulseNet, the CDC's national laboratory...


