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Optimizing HPV Vaccination Strategy: An Optimal Control Problem

delete2026-05-12
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AI
B
Bouhali, Amira *
O
Ounissi, Zeineb *
A
Ali Moussaoui
S
Slimane Ben Miled
A
Amira Kebir
DOI:10.3390/math14101634delete
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摘要

摘要

En 中文
人乳头瘤病毒(HPV)是全球最常见的性传播感染之一,其持续性感染在导致宫颈癌中起主要作用。因此,疫苗接种是关键的预防策略。我们使用针对突尼斯案例量身定制的性别分层动态传播模型,研究了双价HPV疫苗接种的影响。所提出的模型考虑了部分交叉免疫,并捕捉了仅对女性接种疫苗的直接和间接效应。我们推导了基本再生数和相应的群体免疫阈值,全局敏感性分析表明,疫苗覆盖率、有效性和交叉保护是传播减少的强驱动因素。通过在生物学相关范围内改变这些参数,量化了它们对疾病传播的联合影响。采用庞特里亚金最大值原理构建并分析了一个最优控制问题,以在限制疫苗接种努力的同时最小化持续性感染和癌症病例。比较了三种疫苗接种情景:疫苗完全可及的理想情况,以及资源受限的两种情况,其最大覆盖率分别为100%和80%。数值模拟显示,在不受约束的条件下,最优策略可显著抑制感染、持续感染和癌症。在努力受限的情况下,最优控制仍能实现疾病负担的显著减少,免疫建立的动力和速度差异较小。我们的结果强调了仅对女性进行HPV疫苗接种在提供直接和间接保护方面的有效性,并强调了在资源受限环境下保持持续覆盖率的重要性。
Keyword:
HPV vaccination
optimal control
mathematical modeling
cervical cancer prevention
resource-limited settings

期刊

Mathematics 封面图
Mathematics
IF:
2.2
论文数:
3.1K
被引数:
3.6W

机构

U
universite de tunis-el-manar
学者数:
1.2W
论文数: 7.4K
被引数: 4
I
institut pasteur tunis
学者数:
568
论文数: 328
被引数: 4
引用论文

引用论文

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