Cost-effectiveness of maternal pertussis immunization: implications of a dynamic transmission model for low- and middle-income countries

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dc.creatorSun-Young, Kim
dc.creatorKyung-Duk, Min
dc.creatorRussell, Louise B.
dc.creatorToscano, Cristiana Maria
dc.creatorMinamisava, Ruth
dc.creatorAndrade, Ana Lúcia Sampaio Sgambatti de
dc.creatorSanderson, Colin
dc.creatorSinha, Anushua
dc.date.accessioned2024-08-22T13:32:57Z
dc.date.available2024-08-22T13:32:57Z
dc.date.issued2021
dc.description.abstractObjective This study evaluates the cost-effectiveness of maternal acellular pertussis (aP) immunization in low- and middle-income countries using a dynamic transmission model. Methods We developed a dynamic transmission model to simulate the impact of infant vaccination with whole-cell pertussis (wP) vaccine with and without maternal aP immunization. The model was calibrated to Brazilian surveillance data and then used to project health outcomes and costs under alternative strategies in Brazil, and, after adjusting model parameter values to reflect their conditions, in Nigeria and Bangladesh. The primary measure of cost-effectiveness is incremental cost (2014 USD) per disability-adjusted life-year (DALY). Results The dynamic model shows that maternal aP immunization would be cost-effective in Brazil, a middle-income country, under the base-case assumptions, but would be very expensive at infant vaccination coverage in and above the threshold range necessary to eliminate the disease (90–95%). At 2007 infant coverage (DTP1 90%, DTP3 61% at 1 year of age), maternal immunization would cost < $4,000 per DALY averted. At high infant coverage, such as Brazil in 1996 (DTP1 94%, DTP3 74% at 1 year), cost/DALY increases to $1.27 million. When the model’s time horizon was extended from 2030 to 2100, cost/DALY increased under both infant coverage levels, but more steeply with high coverage. The results were moderately sensitive to discount rate, maternal vaccine price, and maternal aP coverage and were robust using the 100 best-fitting parameter sets. Scenarios representing low-income countries showed that maternal aP immunization could be cost-saving in countries with low infant coverage, such as Nigeria, but very expensive in countries, such as Bangladesh, with high infant coverage. Conclusion A dynamic model, which captures the herd immunity benefits of pertussis vaccination, shows that, in low- and middle-income countries, maternal aP immunization is cost-effective when infant vaccination coverage is moderate, even cost-saving when it is low, but not cost-effective when coverage levels pass 90–95%.
dc.identifier.citationSUN-YOUNG, Kim et al. Cost-effectiveness of maternal pertussis immunization: implications of a dynamic transmission model for low- and middle-income countries. Vaccine, Amsterdam, v. 39, n. 1/3, p. 147-157, 2021. DOI: 10.1016/j.vaccine.2020.09.012. Disponível em: https://www.sciencedirect.com/science/article/pii/S0264410X20311543?via%3Dihub. Acesso em: 12 ago. 2024.
dc.identifier.doi10.1016/j.vaccine.2020.09.012
dc.identifier.issn0264-410X
dc.identifier.urihttp://repositorio.bc.ufg.br//handle/ri/25367
dc.language.isoeng
dc.publisher.countryHolanda
dc.publisher.departmentInstituto de Patologia Tropical e Saúde Pública - IPTSP (RMG)
dc.rightsAcesso Aberto
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectPertussis
dc.subjectVaccine
dc.subjectDynamic transmission model
dc.subjectCost-effectiveness
dc.subjectBrazil
dc.subjectLow-and middle-income countries
dc.titleCost-effectiveness of maternal pertussis immunization: implications of a dynamic transmission model for low- and middle-income countries
dc.typeArtigo

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