寨卡病毒感染增加了未来严重登革热的风险
Leah C Katzelnick1, César Narvaez2, Sonia Arguello2
1Division of Infectious Diseases and Vaccinology, School of Public Health, University of California, Berkeley, Berkeley, CA, USA.
概括
之前感染寨卡病毒 (ZIKV) 可以增加严重登革热病毒 (DENV) 疾病的风险,类似于DENV血清型. 然而,多个DENV感染降低了登革热的风险,使疫苗开发复杂化.
科学领域:
- 病毒学和免疫学
- 传染病的流行病学
- 疫苗开发的挑战
背景情况:
- 寨卡病毒 (ZIKV) 大流行引发了与登革热病毒 (DENV) 交叉免疫性的问题.
- 对于公共卫生和疫苗策略来说,了解弗拉维病毒相互作用至关重要.
研究的目的:
- 研究先前的寨卡病毒 (ZIKV) 和登革热病毒 (DENV) 感染如何影响后来的DENV和ZIKV疾病风险和严重程度.
- 检查顺序性黄病毒感染对儿童群体的影响.
主要方法:
- 在尼加拉瓜追踪儿科感染的前性队列研究.
- 连续流行病的分析:DENV1-3 (2004-2015年),ZIKV (2016-2017年),DENV2 (2018-2020年).
- 根据之前的弗拉维病毒暴露史和抗体标位评估症状感染和疾病严重程度.
主要成果:
- 之前的ZIKV感染或单次DENV感染,增加了DENV2症状的风险和严重程度.
- 之前多次DENV感染降低了登革热的风险.
- 对DENV1,DENV3和ZIKV疾病的高抗DENV标位;中间标位增加了DENV2和DENV3的严重程度.
结论:
- 之前的ZIKV感染可以像DENV血清型一样,增加随后的登革热病的严重程度.
- 复杂的抗体介导免疫反应 (原始抗原罪) 复杂化了黄病毒疾病的预测.
- 这些发现为开发有效的四价抗登革热和单价抗寨卡疫苗带来了重大挑战.
相关概念视频
Factors Affecting the Risk of Infection
14.1K
The hosts' susceptibility to infection depends on several factors. The integrity of the skin and mucous membranes helps protect the body against microbial attacks. When the skin is altered, the chance of infection, limb loss, and even death increases.
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin...
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin...
14.1K
Pulmonary Tuberculosis I
1.7K
Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
1.7K
Endocarditis I: Introduction
873
Introduction:Endocarditis is the infection of the endocardium, the inner lining of the heart and its valves. When the heart muscle is involved, the condition is termed myocarditis, while an infection of the outer lining is called pericarditis. Infective endocarditis (IE) primarily affects the endocardium, where pathogens adhere to the valves or lining, forming vegetation that can lead to severe complications. Infective endocarditis occurs when microorganisms, usually bacteria from other body...
873
Endocarditis IV: Nursing Management
630
Infective endocarditis (IE) is a chronic infection of the heart's endocardium, primarily affecting the heart valves. A detailed nursing assessment for a patient with IE involves collecting subjective and objective data to ensure an accurate diagnosis and timely intervention.Subjective DataThe nurse gathers information about the patient's symptoms and complaints during the subjective assessment. Patients with infective endocarditis often report non-specific symptoms that can mimic other...
630
Myocarditis III: Medical Management
343
Myocarditis: Comprehensive Medical ManagementMyocarditis, the heart muscle inflammation, requires a comprehensive medical management strategy that addresses the underlying cause, provides supportive care, manages symptoms, and reduces cardiac workload.Infections and Autoimmune CausesAdminister appropriate antimicrobial therapy when an infectious agent causes myocarditis. For instance, penicillin treats infections caused by Group A Streptococcus. In cases where autoimmune processes are...
343
Coronary Artery Disease III: Clinical Manifestations
620
Coronary Artery Disease (CAD) is a primary health risk worldwide, leading to significant morbidity and mortality. The condition arises from the buildup of atherosclerotic plaques within the coronary arteries, resulting in diminished blood supply to the heart muscle.The clinical manifestations of CAD vary widely, from asymptomatic stages to severe, life-threatening conditions. Understanding these manifestations is crucial for early diagnosis and effective management.Angina Pectoris: The Warning...
620


