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Protecting the most vulnerable age group: a review of MenACWY-TT immunogenicity and safety in infants.
Expert Review of Vaccines ( IF 5.5 ) Pub Date : 2020-04-06 , DOI: 10.1080/14760584.2020.1745070
Federico Martinón-Torres 1, 2 , Lidia Serra 3 , Marco Aurelio P Safadi 4
Affiliation  

INTRODUCTION Neisseria meningitidis causes invasive meningococcal disease (IMD), with the highest incidence observed in infants and young children. Meningococcal serogroups A, B, C, W, X, and Y account for almost all IMD cases worldwide. Available meningococcal vaccines targeting serogroups A, C, W, and Y (MenACWY) include those conjugated to diphtheria toxoid (MenACWY-D), diphtheria protein cross-reactive material 197 (MenACWY-CRM197), and tetanus toxoid (MenACWY-TT). MenACWY-TT is indicated for use starting at 6 weeks of age. AREAS COVERED This review discusses data from the four primary studies assessing MenACWY-TT safety and immunogenicity in infants, which evaluated a variety of dosing schedules, short-term and long-term outcomes, and impact of coadministration on the immunogenicity of routine childhood vaccines. Remaining gaps in the field are addressed. EXPERT OPINION Robust data support the use of MenACWY-TT in infants starting as early as 6 weeks of age. MenACWY-TT was safe and well tolerated in infants, was immunogenic after priming and booster, and demonstrated persistent immunogenicity. Lower persistence for serogroup A relative to other serogroups based on serum bactericidal assays (SBAs) using human complement appears to be a class effect of MenACWY conjugate vaccines. Correlates of protection other than SBA are being explored, including immunologic responses associated with different carrier proteins.

中文翻译:

保护最脆弱的年龄段:MenACWY-TT婴儿免疫原性和安全性综述。

引言脑膜炎奈瑟氏菌可引起侵袭性脑膜炎球菌病(IMD),在婴幼儿中发病率最高。脑膜炎球菌血清群A,B,C,W,X和Y占全世界几乎所有IMD病例的原因。针对A,C,W和Y血清群(MenACWY)的可用脑膜炎球菌疫苗包括与白喉类毒素(MenACWY-D),白喉蛋白交叉反应物质197(MenACWY-CRM197)和破伤风类毒素(MenACWY-TT)结合的疫苗。MenACWY-TT适用于6周龄的婴儿。涵盖的领域本综述讨论了评估婴儿MenACWY-TT安全性和免疫原性的四项主要研究的数据,该研究评估了各种给药方案,短期和长期结局以及共同给药对常规儿童疫苗免疫原性的影响。解决了该领域尚存在的空白。专家意见可靠的数据支持MenACWY-TT在早于6周龄的婴儿中使用。MenACWY-TT在婴儿中安全且耐受良好,在初免和加强免疫后具有免疫原性,并表现出持久的免疫原性。基于使用人补体的血清杀菌试验(SBA),相对于其他血清群,血清群A的持久性较低,这似乎是MenACWY结合疫苗的一类作用。目前正在探索除SBA以外的其他相关保护措施,包括与不同载体蛋白相关的免疫反应。并表现出持久的免疫原性。基于使用人补体的血清杀菌试验(SBA),相对于其他血清群,血清群A的持久性较低,这似乎是MenACWY结合疫苗的一类作用。目前正在探索除SBA以外的其他相关保护措施,包括与不同载体蛋白相关的免疫应答。并显示出持久的免疫原性。基于使用人补体的血清杀菌试验(SBA),相对于其他血清群,血清群A的持久性较低,这似乎是MenACWY结合疫苗的一类作用。目前正在探索除SBA以外的其他相关保护措施,包括与不同载体蛋白相关的免疫反应。
更新日期:2020-04-06
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