Models of the impact of dengue vaccines: a review of current research and potential approaches.

Models of the impact of dengue vaccines: a review of current research and potential approaches.
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DOI:
10.1016/j.vaccine.2011.06.042
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发表时间:
2011-08-11
期刊:
影响因子:
5.5
通讯作者:
Cummings, Derek A. T.
Cummings, Derek A. T.
中科院分区:
医学3区
文献类型:
--
作者:
Johansson, Michael A.;Hombach, Joachim;Cummings, Derek A. T.

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疫苗接种通过预防个人感染直接减少病原体的传播,通过减少感染者与易感人群之间接触的可能性间接减少病原体的传播。可以使用传播的数学模型来估计未来登革热疫苗的潜在综合影响。然而,准确反映登革热传播动态的模型结构存在相当大的不确定性。在这里,我们回顾了可用于评估未来登革热免疫规划影响的模型。我们还回顾了用于验证和参数化模型的方法。所有方法的一个关键参数是基本繁殖数R0,它可以用来确定消除传播的关键疫苗接种比例。我们回顾了几种用于估计这一数量的方法。最后,我们讨论了必须评估的登革热疫苗的特性,以准确评估它们对登革热病毒传播的潜在影响。
Vaccination reduces transmission of pathogens directly, by preventing individual infections, and indirectly, by reducing the probability of contact between infected individuals and susceptible ones. The potential combined impact of future dengue vaccines can be estimated using mathematical models of transmission. However, there is considerable uncertainty in the structure of models that accurately represent dengue transmission dynamics. Here, we review models that could be used to assess the impact of future dengue immunization programmes. We also review approaches that have been used to validate and parameterize models. A key parameter of all approaches is the basic reproduction number, R0, which can be used to determine the critical vaccination fraction to eliminate transmission. We review several methods that have been used to estimate this quantity. Finally, we discuss the characteristics of dengue vaccines that must be estimated to accurately assess their potential impact on dengue virus transmission.
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