Optimising Vaccine Dose in Inoculation against SARS-CoV-2, a Multi-Factor Optimisation Modelling Study to Maximise Vaccine Safety and Efficacy.

Optimising Vaccine Dose in Inoculation against SARS-CoV-2, a Multi-Factor Optimisation Modelling Study to Maximise Vaccine Safety and Efficacy.
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优化 SARS-CoV-2 接种中的疫苗剂量,一项旨在最大限度提高疫苗安全性和功效的多因素优化建模研究。

DOI:
10.3390/vaccines9020078
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发表时间:
2021-01-22
期刊:
影响因子:
7.8
通讯作者:
White RG
White RG
中科院分区:
医学3区
文献类型:
--
作者:
Benest J;Rhodes S;Quaife M;Evans TG;White RG

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开发针对全球大流行SARS-CoV-2的疫苗是积极研究的一个关键领域。建模可用于确定最佳疫苗剂量;最大限度地提高疫苗效力和安全性,并最大限度地降低成本。我们校准了统计模型,以公布的剂量依赖性血清转换和不良事件数据的重组腺病毒5型(Ad 5)SARS-CoV-2疫苗给予剂量为5.0 × 1010,1.0 × 1011和1.5 × 1011病毒颗粒。我们估计了三个目标的最佳剂量,发现:(A)可能诱导群体免疫的最小剂量,(B)使免疫原性和安全性最大化的剂量,以及(C)使免疫原性和安全性最大化同时使成本最小化的剂量。结果表明,每人病毒颗粒的最佳剂量[95%置信区间]为(A)1.3 × 1011 [0.8-7.9 × 1011],(B)1.5 × 1011 [0.3-5.0 × 1011]和(C)1.1 × 1011 [0.2-1.5 × 1011]。最佳剂量超过5.0 × 1010个病毒颗粒,只有当输送成本超过0.65英镑或每1011个病毒颗粒的成本低于6.23英镑时。最佳剂量可能因开发人员和决策者的目标而异,但需要进一步研究以提高最佳剂量估计的准确性。
Developing a vaccine against the global pandemic SARS-CoV-2 is a critical area of active research. Modelling can be used to identify optimal vaccine dosing; maximising vaccine efficacy and safety and minimising cost. We calibrated statistical models to published dose-dependent seroconversion and adverse event data of a recombinant adenovirus type-5 (Ad5) SARS-CoV-2 vaccine given at doses 5.0 × 1010, 1.0 × 1011 and 1.5 × 1011 viral particles. We estimated the optimal dose for three objectives, finding: (A) the minimum dose that may induce herd immunity, (B) the dose that maximises immunogenicity and safety and (C) the dose that maximises immunogenicity and safety whilst minimising cost. Results suggest optimal dose [95% confidence interval] in viral particles per person was (A) 1.3 × 1011 [0.8–7.9 × 1011], (B) 1.5 × 1011 [0.3–5.0 × 1011] and (C) 1.1 × 1011 [0.2–1.5 × 1011]. Optimal dose exceeded 5.0 × 1010 viral particles only if the cost of delivery exceeded £0.65 or cost per 1011 viral particles was less than £6.23. Optimal dose may differ depending on the objectives of developers and policy-makers, but further research is required to improve the accuracy of optimal-dose estimates.
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