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Biography

My research area is vaccine impact modelling with a focus on estimating the health, economic, and equity impact of vaccination programmes to support evidence-based decision-making on vaccination strategies in collaboration with partners and stakeholders at the global, regional, and national levels. I have worked on impact assessment of existing and new vaccines to inform vaccine policy in varied contextual settings of low-, middle-, and high-income countries. I welcome collaborations related to estimating vaccination impact in different geographic settings, and you are welcome to contact me.

Activities

Works (50 of 67)

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Page 1 of 2

Chikungunya vaccine development, challenges, and pathway toward public health impact

Vaccine
2024-12 | Journal article
Part of ISSN: 0264-410X
Contributors: Clara Maure; Kanat Khazhidinov; Hyolim Kang; Megan Auzenbergs; Pascaline Moyersoen; Kaja Abbas; Gustavo Mendes Lima Santos; Libia Milena Hernandez Medina; T. Anh Wartel; Jerome H. Kim et al.
Source: Self-asserted source
Kaja Abbas

Typhoid conjugate vaccine implementation in India: A review of supportive evidence

Vaccine: X
2024-12 | Journal article
Part of ISSN: 2590-1362
Contributors: Vijayalaxmi V. Mogasale; Anish Sinha; Jacob John; Habib Hasan Farooqui; Arindam Ray; Tracey Chantler; Vittal Mogasale; Bhim Gopal Dhoubhadel; W John Edmunds; Andrew Clark et al.
Source: Self-asserted source
Kaja Abbas

Research priorities to support typhoid conjugate vaccine decision-making in India: evidence assessment and stakeholder survey

BMJ Public Health
2024-10 | Journal article | Author
Part of ISSN: 2753-4294
Contributors: Vijayalaxmi V Mogasale; Anish Sinha; Jacob John; Habib Hasan Farooqui; Arindam Ray; Tracey Chantler; Vittal Mogasale; Bhim Gopal Dhoubhadel; W John Edmunds; Andrew Clark et al.
Source: Self-asserted source
Kaja Abbas

Equity impact of HPV vaccination on lifetime projections of cervical cancer burden among cohorts in 84 countries by global, regional, and income levels, 2010–22: a modelling study

eClinicalMedicine
2024-04 | Journal article
Contributors: Kaja Abbas; Katelyn Jison Yoo; Kiesha Prem; Mark Jit
Source: check_circle
Crossref

Estimating the health effects of COVID-19-related immunisation disruptions in 112 countries during 2020–30: a modelling study

The Lancet Global Health
2024-04 | Journal article
Part of ISSN: 2214-109X
Contributors: Anna-Maria Hartner; Xiang Li; Susy Echeverria-Londono; Jeremy Roth; Kaja Abbas; Megan Auzenbergs; Margaret J de Villiers; Matthew J Ferrari; Keith Fraser; Han Fu et al.
Source: Self-asserted source
Kaja Abbas

Programmatic considerations and evidence gaps for chikungunya vaccine introduction in countries at risk of chikungunya outbreaks: Stakeholder analysis

PLOS Neglected Tropical Diseases
2024-04-04 | Journal article
Part of ISSN: 1935-2735
Contributors: Megan Auzenbergs; Clara Maure; Hyolim Kang; Andrew Clark; Oliver Brady; Sushant Sahastrabuddhe; Kaja Abbas
Source: Self-asserted source
Kaja Abbas

Systematic review of social determinants of childhood immunisation in low- and middle-income countries and equity impact analysis of childhood vaccination coverage in Nigeria

PLOS ONE
2024-03-06 | Journal article
Contributors: Sarah V. Williams; Harapan Harapan; Tanimola Akande; Kaja Abbas
Source: check_circle
Crossref

Chikungunya seroprevalence, force of infection, and prevalence of chronic disability after infection in endemic and epidemic settings: a systematic review, meta-analysis, and modelling study.

The Lancet. Infectious diseases
2024-02-08 | Journal article
Contributors: Kang H; Auzenbergs M; Clapham H; Maure C; Kim JH; Salje H; Taylor CG; Lim A; Clark A; Edmunds WJ et al.
Source: Self-asserted source
Kaja Abbas

State transitions across the Strep A disease spectrum: scoping review and evidence gaps

BMC Infectious Diseases
2024-01-19 | Journal article
Part of ISSN: 1471-2334
Contributors: Prerana Parajulee; Jung-Seok Lee; Kaja Abbas; Jeffrey Cannon; Jean Louis Excler; Jerome H. Kim; Vittal Mogasale
Source: Self-asserted source
Kaja Abbas

Impact and cost-effectiveness of measles vaccination through microarray patches in 70 low-income and middle-income countries: mathematical modelling and early-stage economic evaluation

BMJ Global Health
2023-11 | Journal article
Contributors: Han Fu; Kaja Abbas; Stefano Malvolti; Christopher Gregory; Melissa Ko; Jean-Pierre Amorij; Mark Jit
Source: check_circle
Crossref

Vaccine value profile for Chikungunya

Vaccine
2023-11 | Journal article
Part of ISSN: 0264-410X
Contributors: Ximena Flandes; Clairissa A. Hansen; Sunil Palani; Kaja Abbas; Cate Bennett; William Perea Caro; Raymond Hutubessy; Kanat Khazhidinov; Philipp Lambach; Clara Maure et al.
Source: Self-asserted source
Kaja Abbas

The full health, economic, and social benefits of prospective Strep A vaccination

npj Vaccines
2023-10-30 | Journal article
Contributors: Daniel Cadarette; Maddalena Ferranna; Jeffrey W. Cannon; Kaja Abbas; Fiona Giannini; Leo Zucker; David E. Bloom
Source: check_circle
Crossref

Health effects of routine measles vaccination and supplementary immunisation activities in 14 high-burden countries: a Dynamic Measles Immunization Calculation Engine (DynaMICE) modelling study

The Lancet Global Health
2023-08 | Journal article
Part of ISSN: 2214-109X
Contributors: Megan Auzenbergs; Han Fu; Kaja Abbas; Simon R Procter; Felicity T Cutts; Mark Jit
Source: Self-asserted source
Kaja Abbas

Associations of water, sanitation, and hygiene with typhoid fever in case–control studies: a systematic review and meta-analysis

BMC Infectious Diseases
2023-08-29 | Journal article
Contributors: Chaelin Kim; Gerard R. Goucher; Birkneh Tilahun Tadesse; Woojoo Lee; Kaja Abbas; Jong-Hoon Kim
Source: check_circle
Crossref

Global impact and cost-effectiveness of one-dose versus two-dose human papillomavirus vaccination schedules: a comparative modelling analysis

BMC Medicine
2023-08-28 | Journal article
Part of ISSN: 1741-7015
Contributors: Kiesha Prem; Yoon Hong Choi; Élodie Bénard; Emily A. Burger; Liza Hadley; Jean-François Laprise; Mary Caroline Regan; Mélanie Drolet; Stephen Sy; Kaja Abbas et al.
Source: Self-asserted source
Kaja Abbas

The potential global cost-effectiveness of prospective Strep A vaccines and associated implementation efforts

npj Vaccines
2023-08-25 | Journal article
Contributors: Jung-Seok Lee; Vittal Mogasale; Sol Kim; Jeffrey Cannon; Fiona Giannini; Kaja Abbas; Jean-Louis Excler; Jerome H. Kim
Source: check_circle
Crossref

Global and regional burden of attributable and associated bacterial antimicrobial resistance avertable by vaccination: modelling study

BMJ Global Health
2023-07 | Journal article
Contributors: Chaelin Kim; Marianne Holm; Isabel Frost; Mateusz Hasso-Agopsowicz; Kaja Abbas
Source: check_circle
Crossref

Impact, cost-effectiveness, and budget implications of HPV vaccination in Kenya: A modelling study

Vaccine
2023-06 | Journal article | Author
Part of ISSN: 0264-410X
Contributors: Valerian Mwenda; Rose Jalang'o; Christine Miano; Joan-Paula Bor; Mary Nyangasi; Lucy Mecca; Vincent Were; Edward Kariithi; Clint Pecenka; Anne Schuind et al.
Source: Self-asserted source
Kaja Abbas

Modeling the potential health impact of prospective Strep A vaccines

npj Vaccines
2023-06-10 | Journal article
Contributors: Fiona Giannini; Jeffrey W. Cannon; Daniel Cadarette; David E. Bloom; Hannah C. Moore; Jonathan Carapetis; Kaja Abbas
Source: check_circle
Crossref

Exploring the subnational inequality and heterogeneity of the impact of routine measles immunisation in Africa.

Vaccine
2022-10 | Journal article
Contributors: Echeverria-Londono S; Hartner AM; Li X; Roth J; Portnoy A; Sbarra AN; Abbas K; Ferrari M; Fu H; Jit M et al.
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central

Vaccine equity in low and middle income countries: a systematic review and meta-analysis.

International journal for equity in health
2022-06 | Journal article
Contributors: Ali HA; Hartner AM; Echeverria-Londono S; Roth J; Li X; Abbas K; Portnoy A; Vynnycky E; Woodruff K; Ferguson NM et al.
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central

COVID-19 impact on routine immunisations for vaccine-preventable diseases: Projecting the effect of different routes to recovery.

Vaccine
2022-05 | Journal article
Contributors: Toor J; Li X; Jit M; Trotter CL; Echeverria-Londono S; Hartner AM; Roth J; Portnoy A; Abbas K; Ferguson NM et al.
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central

Public health and social measures to mitigate the health and economic impact of the COVID-19 pandemic in Turkey, Egypt, Ukraine, Kazakhstan, and Poland during 2020-2021: situational analysis.

BMC public health
2022-05 | Journal article
Contributors: Kitamura N; Abbas K; Nathwani D
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central

Dosing interval strategies for two-dose COVID-19 vaccination in 13 middle-income countries of Europe: Health impact modelling and benefit-risk analysis

The Lancet regional health. Europe
2022-04 | Journal article
Contributors: Liu Y; Pearson C; Sandmann F; Barnard R; Kim J; CMMID COVID-19 Working Group; Flasche S; Jit M; Abbas K
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central

Differential health impact of intervention programs for time-varying disease risk: a measles vaccination modeling study.

BMC medicine
2022-03 | Journal article
Contributors: Portnoy A; Hsieh YL; Abbas K; Klepac P; Santos H; Brenzel L; Jit M; Ferrari M
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central

Childhood immunisation timeliness and vaccine confidence by health information source, maternal, socioeconomic, and geographic characteristics in Albania

BMC Public Health
2021-12 | Journal article
Contributors: Daniela Mayerová; Kaja Abbas
Source: check_circle
Crossref

Inequities in childhood immunisation coverage associated with socioeconomic, geographic, maternal, child, and place of birth characteristics in Kenya

BMC Infectious Diseases
2021-12 | Journal article
Contributors: Simon Allan; Ifedayo M. O. Adetifa; Kaja Abbas
Source: check_circle
Crossref

Projections of human papillomavirus (HPV) vaccination impact in Ethiopia, India, Nigeria and Pakistan: a comparative modelling study

BMJ Global Health
2021-11 | Journal article
Contributors: Allison Portnoy; Kaja Abbas; Steven Sweet; Jane J Kim; Mark Jit
Source: check_circle
Crossref

Impact evaluation of immunisation service integration to nutrition programmes and paediatric outpatient departments of primary healthcare centres in Rumbek East and Rumbek Centre counties of South Sudan

Family Medicine and Community Health
2021-08 | Journal article
Contributors: Israel Oluwaseyidayo Idris; Justin Geno Obwoya; Janet Tapkigen; Serifu Ayobami Lamidi; Victor A Ochagu; Kaja Abbas
Source: check_circle
Crossref

SARS-CoV-2 infection risk during delivery of childhood vaccination campaigns: a modelling study.

BMC medicine
2021-08 | Journal article
Contributors: Procter SR; Abbas K; Flasche S; Griffiths U; Hagedorn B; O'Reilly KM; CMMID COVID-19 Working Group; Jit M
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central

Disruptions to childhood immunisation due to the COVID-19 pandemic.

Lancet (London, England)
2021-07 | Journal article
Contributors: Abbas K; Mogasale V
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central

Lives saved with vaccination for 10 pathogens across 112 countries in a pre-COVID-19 world.

eLife
2021-07 | Journal article
Contributors: Toor J; Echeverria-Londono S; Li X; Abbas K; Carter ED; Clapham HE; Clark A; de Villiers MJ; Eilertson K; Ferrari M et al.
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central

Impact of COVID-19-related disruptions to measles, meningococcal A, and yellow fever vaccination in 10 countries.

eLife
2021-06 | Journal article
Contributors: Gaythorpe KA; Abbas K; Huber J; Karachaliou A; Thakkar N; Woodruff K; Li X; Echeverria-Londono S; Jit M
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central

The importance of supplementary immunisation activities to prevent measles outbreaks during the COVID-19 pandemic in Kenya.

BMC medicine
2021-02 | Journal article
Contributors: Mburu CN; Ojal J; Chebet R; Akech D; Karia B; Tuju J; Sigilai A; Abbas K; Jit M; Funk S et al.
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central

COVID-19's lost generation of unvaccinated children - Authors' reply.

The Lancet. Global health
2021-01 | Journal article
Contributors: Abbas K; Procter SR; Clark A; Flasche S
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central

Effect of evidence updates on key determinants of measles vaccination impact: a DynaMICE modelling study in ten high-burden countries

BMC medicine
2021-01 | Journal article
Contributors: Fu H; Abbas K; Klepac P; van Zandvoort K; Tanvir H; Portnoy A; Jit M
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central

Estimating the health impact of vaccination against ten pathogens in 98 low-income and middle-income countries from 2000 to 2030: a modelling study.

Lancet (London, England)
2021-01 | Journal article
Contributors: Li X; Mukandavire C; Cucunubá ZM; Echeverria Londono S; Abbas K; Clapham HE; Jit M; Johnson HL; Papadopoulos T; Vynnycky E et al.
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central

How can the public health impact of vaccination be estimated?

BMC public health
2021-01 | Journal article
Contributors: Echeverria-Londono S; Li X; Toor J; de Villiers M; Nayagam S; Hallett T; Abbas K; Jit M; Klepac P; Jean K et al.
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central

Assessing the value of human papillomavirus vaccination in Gavi-eligible low-income and middle-income countries

BMJ Global Health
2020-10 | Journal article
Contributors: Jessica Ochalek; Kaja Abbas; Karl Claxton; Mark Jit; James Lomas
Source: check_circle
Crossref

Routine childhood immunisation during the COVID-19 pandemic in Africa: a benefit-risk analysis of health benefits versus excess risk of SARS-CoV-2 infection.

The Lancet. Global health
2020-07 | Journal article
Contributors: Abbas K; Procter SR; van Zandvoort K; Clark A; Funk S; Mengistu T; Hogan D; Dansereau E; Jit M; Flasche S et al.
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central

Childhood vaccination coverage and equity impact in Ethiopia by socioeconomic, geographic, maternal, and child characteristics.

Vaccine
2020-04 | Journal article
Contributors: Geweniger A; Abbas KM
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central

Effects of updated demography, disability weights, and cervical cancer burden on estimates of human papillomavirus vaccination impact at the global, regional, and national levels: a PRIME modelling study.

The Lancet. Global health
2020-02 | Journal article
Contributors: Abbas KM; van Zandvoort K; Brisson M; Jit M
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central

Environmental factors affecting ecological niche of Coccidioides species and spatial dynamics of valley fever in the United States.

Spatial and spatio-temporal epidemiology
2019-11 | Journal article
Contributors: Weaver E; Kolivras KN; Thomas RQ; Thomas VA; Abbas KM
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central

Serostatus testing and dengue vaccine cost–benefit thresholds

Journal of The Royal Society Interface
2019-08-30 | Journal article
Contributors: Carl A. B. Pearson; Kaja M. Abbas; Samuel Clifford; Stefan Flasche; Thomas J. Hladish
Source: check_circle
Crossref

Impact of demographic disparities in social distancing and vaccination on influenza epidemics in urban and rural regions of the United States.

BMC infectious diseases
2019-03 | Journal article
Contributors: Singh M; Sarkhel P; Kang GJ; Marathe A; Boyle K; Murray-Tuite P; Abbas KM; Swarup S
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central

An intelligent decision support system to prevent and control of dengue

Journal of Ambient Intelligence and Humanized Computing
2018 | Journal article
EID:

2-s2.0-85049571345

Contributors: Lopez, D.; Manogaran, G.; Varatharajan, R.; Abbas, K.M.
Source: Self-asserted source
Kaja Abbas via Scopus - Elsevier

Demographics, perceptions, and socioeconomic factors affecting influenza vaccination among adults in the United States.

PeerJ
2018-07 | Journal article
Contributors: Abbas KM; Kang GJ; Chen D; Werre SR; Marathe A
Source: Self-asserted source
Kaja Abbas via Europe PubMed Central
grade
Preferred source (of 2)‎

Big Data Analytics in Healthcare Internet of Things

Innovative Healthcare Systems for the 21st Century
2017 | Other
Contributors: Gunasekaran Manogaran; Daphne Lopez; Chandu Thota; Kaja M. Abbas; Saumyadipta Pyne; Revathi Sundarasekar
Source: Self-asserted source
Kaja Abbas via Crossref Metadata Search
grade
Preferred source (of 2)‎

Big Data Knowledge System in Healthcare

Internet of Things and Big Data Technologies for Next Generation Healthcare
2017 | Other
Contributors: Gunasekaran Manogaran; Chandu Thota; Daphne Lopez; V. Vijayakumar; Kaja M. Abbas; Revathi Sundarsekar
Source: Self-asserted source
Kaja Abbas via Crossref Metadata Search

Multi-scale immunoepidemiological modeling of within-host and betweenhost HIV dynamics: Systematic review of mathematical models

PeerJ
2017 | Journal article
EID:

2-s2.0-85030167276

Contributors: Dorratoltaj, N.; Nikin-Beers, R.; Ciupe, S.M.; Eubank, S.G.; Abbas, K.M.
Source: Self-asserted source
Kaja Abbas via Scopus - Elsevier
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