Analysis of the optimal vaccination age for Dengue in Brazil with a tetravalent Dengue vaccine

Sandra B. Maier, Xiao Huang, Eduardo Massad, Marcos Amaku, Marcelo N. Burattini, David Greenhalgh

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In this paper we study a mathematical model to analyse the optimal vaccination age against Dengue in Brazil. Data from Brazil are used to estimate the basic reproduction numbers for each of the four Dengue serotypes and then the optimal vaccination age is calculated using a method due to Hethcote [1]. The vaccine has different efficacies against each serotype. Vaccination that is too early is inffective as individuals are protected by maternal antibodies but leaving vaccination until later may allow the disease to spread.

First of all the optimal vaccination ages are calculated where there is just one serotype in circulation and then when there are multiple serotypes. The calculations are done using data both assuming constant vaccine efficacy and age-dependent vaccine efficacy against a given serotype. The multiple serotype calculations are repeated assuming that the rst infection is a risky infection and that it is not (to model Dengue Antibody Enhancement). The calculations are then repeated when any third or fourth Dengue infections are asymptomatic, so that two Dengue infections with different serotypes provide effective permanent immunity. The calculations are also repeated when the age-dependent risk function (fitted to Brazilian data) is hospitalisation from Dengue and when it is mortality due to Dengue. We find a wide variety of optimal vaccination ages depending on both the serotypes in circulation and the assumptions of the model.
LanguageEnglish
Pages15-32
Number of pages18
JournalMathematical Biosciences
Volume294
Early online date19 Sep 2017
DOIs
Publication statusPublished - 31 Dec 2017

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Dengue Vaccines
Vaccines
dengue
Dengue
Vaccination
Vaccine
Brazil
serotypes
vaccination
vaccines
Infection
Vaccine Efficacy
Antibodies
Antibody
Risk Function
Basic Reproduction number
Dependent
Basic Reproduction Number
Immunity
Mathematical models

Keywords

  • Dengue
  • vaccination
  • optimal vaccination age
  • age-structured models
  • serotype
  • risk function
  • mortality
  • hospitalisation
  • mathematical model

Cite this

Maier, Sandra B. ; Huang, Xiao ; Massad, Eduardo ; Amaku, Marcos ; Burattini, Marcelo N. ; Greenhalgh, David. / Analysis of the optimal vaccination age for Dengue in Brazil with a tetravalent Dengue vaccine. In: Mathematical Biosciences. 2017 ; Vol. 294. pp. 15-32.
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Analysis of the optimal vaccination age for Dengue in Brazil with a tetravalent Dengue vaccine. / Maier, Sandra B.; Huang, Xiao ; Massad, Eduardo; Amaku, Marcos; Burattini, Marcelo N.; Greenhalgh, David.

In: Mathematical Biosciences, Vol. 294, 31.12.2017, p. 15-32.

Research output: Contribution to journalArticle

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