登革热分子动力学:病毒载量和血清型变化预测了印度东部加尔各答的严重程度和死亡
Suman Kundu1, Swagata Ganguly Bhattacharjee2, Arup Kumar Pattanayak2
1Department of Microbiology, ESI Hospital Sealdah, Kolkata, PIN - 700009, West Bengal, India.
概括
在加尔各答,登革热病毒血清型2 (DENV-2) 是最常见的,但登革热病毒血清型3 (DENV-3) 导致更多的死亡. 高病毒载量预测严重的登革热,指导更好的患者分组.
科学领域:
- 传染性疾病 传染性疾病
- 病毒学 病毒学
- 公共卫生 公共卫生
背景情况:
- 登革热的严重程度各不相同,受病毒因素和宿主免疫力的影响.
- 卡尔卡塔面临着高登革热发病率,但特定的血清型病毒性与临床结果的联系需要进一步研究.
研究的目的:
- 调查登革热病毒血清型,病毒载量和临床严重程度之间的关联在加尔各答.
- 为了确定严重登革热后果的预后标志物.
主要方法:
- 在加尔各答120名登革热患者的前性观察性研究.
- 用于登革热病毒血型鉴定和定量 (病毒载量) 的分子方法.
- 根据世卫组织2009年标准根据严重程度分类的患者.
主要成果:
- 登革热病毒血清型2 (DENV-2) 是最常见的 (45.8%),其次是DENV-3 (33.3%).
- 严重的登革热病例显示病毒载量显著降低 (平均Ct 23.4与28.1).
- 高病毒载量独立预测严重程度;DENV-3趋向于更高的死亡率 (3.31 AOR).
结论:
- 存在一种"流行性-病毒性分离":DENV-2是常见的,但DENV-3更致命.
- 定量病毒载量是登革热严重程度的可靠预测指标.
- 实时分子监测和CT值可以改善分类,并减少超流行地区致命的登革热病例.
相关概念视频
Arboviral Encephalitis
Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...
Yellow Fever
Yellow fever is a viral hemorrhagic disease caused by the yellow fever virus (YFV), a member of the Flaviviridae family. It is transmitted primarily by Aedes and Haemagogus mosquitoes in tropical and subtropical regions of Africa and South America. After transmission through a mosquito bite, the virus initially replicates in skin-resident immune cells such as dendritic cells and macrophages. These cells then migrate to the lymph nodes, where viral replication increases, eventually leading to...
Malaria
Malaria pathogenesis in humans reflects a delicate interplay between parasite biology and host response. Clinical illness reflects a host’s immune response to the parasite’s asexual replication cycle, which is often asymptomatic in individuals with partial immunity. From the parasite's perspective, transmission between mosquito and human with minimal host pathology is evolutionarily advantageous. Among the six Plasmodium species infecting humans, P. falciparum and P. vivax dominate in global...


