{"title":"Global, regional, and subnational trends in typhoid fever burden from 1990 to 2021: an analysis of global burden of disease data","authors":"Z. Ahsan , H. Mehmood , H. Ali , M. Ahsan","doi":"10.1016/j.vacun.2025.500503","DOIUrl":null,"url":null,"abstract":"<div><h3>Introduction</h3><div>Typhoid fever remains a significant global health concern, particularly in low- and middle-income countries (LMICs). The study aimed to assess temporal trends in typhoid fever burden at the global, South Asian, and provincial levels in Pakistan from 1990 to 2021 using data from the Global Burden of Disease (GBD) study.</div></div><div><h3>Methods</h3><div>An ecological analysis was conducted using GBD data to examine trends in age-standardized mortality rates (ASMRs) and disability-adjusted life years (DALYs) attributable to typhoid fever. Temporal changes were analyzed globally, across South Asia, and within Pakistan's provinces using average percent change (APC) calculations and Joinpoint regression.</div></div><div><h3>Results</h3><div>Globally and in South Asia, typhoid-related age-standardized mortality rates (ASMRs) and disability-adjusted life years (DALYs) declined substantially from 1990 to 2021. The global ASMR decreased from 3.22 to 1.31 per 100,000, while DALYs dropped from 247.95 to 101.09 per 100,000. In South Asia, ASMR fell from 9.80 to 3.42, and DALYs from 728.56 to 260.27 per 100,000. Within Pakistan, national ASMR declined from 6.42 to 3.08, and DALYs from 483.43 to 238.58 per 100,000. Provincial trends revealed marked disparities: Punjab and Khyber Pakhtunkhwa exhibited the greatest reductions, whereas Sindh showed slower progress, with the smallest decline in both mortality and DALYs.</div></div><div><h3>Conclusion</h3><div>Despite encouraging global progress, persistent subnational disparities in Pakistan highlight the need for targeted public health interventions. Expanding vaccine coverage, enhancing antimicrobial resistance surveillance, and improving water, sanitation, and hygiene (WASH) infrastructure are essential to further reducing typhoid burden and addressing regional inequities.</div></div>","PeriodicalId":53407,"journal":{"name":"Vacunas","volume":"27 1","pages":"Article 500503"},"PeriodicalIF":0.0000,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Vacunas","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1576988725001177","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/9/30 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"Medicine","Score":null,"Total":0}
引用次数: 0
Abstract
Introduction
Typhoid fever remains a significant global health concern, particularly in low- and middle-income countries (LMICs). The study aimed to assess temporal trends in typhoid fever burden at the global, South Asian, and provincial levels in Pakistan from 1990 to 2021 using data from the Global Burden of Disease (GBD) study.
Methods
An ecological analysis was conducted using GBD data to examine trends in age-standardized mortality rates (ASMRs) and disability-adjusted life years (DALYs) attributable to typhoid fever. Temporal changes were analyzed globally, across South Asia, and within Pakistan's provinces using average percent change (APC) calculations and Joinpoint regression.
Results
Globally and in South Asia, typhoid-related age-standardized mortality rates (ASMRs) and disability-adjusted life years (DALYs) declined substantially from 1990 to 2021. The global ASMR decreased from 3.22 to 1.31 per 100,000, while DALYs dropped from 247.95 to 101.09 per 100,000. In South Asia, ASMR fell from 9.80 to 3.42, and DALYs from 728.56 to 260.27 per 100,000. Within Pakistan, national ASMR declined from 6.42 to 3.08, and DALYs from 483.43 to 238.58 per 100,000. Provincial trends revealed marked disparities: Punjab and Khyber Pakhtunkhwa exhibited the greatest reductions, whereas Sindh showed slower progress, with the smallest decline in both mortality and DALYs.
Conclusion
Despite encouraging global progress, persistent subnational disparities in Pakistan highlight the need for targeted public health interventions. Expanding vaccine coverage, enhancing antimicrobial resistance surveillance, and improving water, sanitation, and hygiene (WASH) infrastructure are essential to further reducing typhoid burden and addressing regional inequities.
期刊介绍:
Sin duda una de las mejores publicaciones para conocer los avances en el campo de las vacunaciones preventivas, tanto en el ámbito de la investigación básica como aplicada y en la evaluación de programas de vacunaciones. Su alta calidad y utilidad la ha llevado a estar indexada en los prestigiosos índices IME y SCOPUS.