Assessment of vaccination impact in PPR-control program implemented in southern States of India: A system dynamics model approach

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cg.authorship.typesCGIAR and developing country instituteen
cg.contributor.affiliationNational Institute of Veterinary Epidemiology and Disease Informatics, Indiaen
cg.contributor.affiliationInternational Livestock Research Instituteen
cg.contributor.affiliationIndian Veterinary Research Instituteen
cg.contributor.donorIndian Council of Agricultural Researchen
cg.coverage.countryIndiaen
cg.coverage.iso3166-alpha2INen
cg.coverage.regionAsiaen
cg.coverage.regionSouthern Asiaen
cg.creator.identifierFrancis Wanyoike: 0000-0002-1907-1410en
cg.creator.identifierSirak Bahta: 0000-0002-5728-2489en
cg.creator.identifierKennady Vijayalakshmy: 0000-0002-9030-6112en
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.3390/v17010023en
cg.issn1999-4915en
cg.issue1en
cg.journalVirusesen
cg.reviewStatusPeer Reviewen
cg.subject.ilriGOATSen
cg.subject.ilriPPRen
cg.subject.ilriSHEEPen
cg.subject.ilriSMALL RUMINANTSen
cg.subject.ilriVACCINESen
cg.volume17en
dc.contributor.authorGurrappanaidu, G.en
dc.contributor.authorSubbanna, N.K.G.en
dc.contributor.authorWanyoike, Francis N.en
dc.contributor.authorBahta, Sirak T.en
dc.contributor.authorReddy, Y.R.en
dc.contributor.authorBardhan, D.en
dc.contributor.authorVinayagamurthy, B.en
dc.contributor.authorKennady, Vijayalakshmyen
dc.contributor.authorRahman, Habiburen
dc.date.accessioned2025-02-21T06:14:24Zen
dc.date.available2025-02-21T06:14:24Zen
dc.identifier.urihttps://hdl.handle.net/10568/173320
dc.titleAssessment of vaccination impact in PPR-control program implemented in southern States of India: A system dynamics model approachen
dcterms.abstractMass vaccination against peste des petits ruminants (PPR) in two southern states of India, namely Andhra Pradesh and Karnataka, has reduced disease outbreaks significantly. The sporadic outbreaks reported now can be attributed in part to the recurring movement of sheep and goats between these contiguous states. This study assessed the present level of economic burden and impact of vaccination on the local system (one state), considering the exposure from the external system (neighboring state) using a system dynamic (SD) model. The SD model relies on interdependence, interaction, information feedback, and circular causality and captures potential feedback between disease control interventions and their impact on various epidemiological and economic outcomes. The data for parameterization of the model were collected through surveys, expert elicitation, and literature review. The sporadic outbreaks reported in recent years (<10 outbreaks/year during 2022) were due to continuous “mass vaccination” for more than a decade. During 2021–2022, the PPR incidence was less in both the states, with an estimated loss of USD 26.30 and USD 22.86 million in Andhra Pradesh and Karnataka, respectively. The SD model results showed a systemic increase in flock size and offtakes and a decline in the number of infected and death cases under high vaccination coverage (75% and 100% coverage) compared to the low-coverage scenario. Hence, the coordinated inter-state vaccination efforts offer better prospects, as efforts in one state have positive externalities in terms of fewer outbreaks in a neighboring state.en
dcterms.accessRightsOpen Accessen
dcterms.audienceScientistsen
dcterms.available2024-12-27en
dcterms.bibliographicCitationGurrappanaidu, G., Subbanna, N.K.G., Wanyoike, F., Bahta, S., Reddy, Y.R., Bardhan, D., Vinayagamurthy, B., Vijayalakshmy, K. and Habibur, R. 2025. Assessment of vaccination impact in PPR-control program implemented in southern States of India: A system dynamics model approach. Viruses 17(1): 23.en
dcterms.issued2025-01-01en
dcterms.languageenen
dcterms.licenseCC-BY-4.0en
dcterms.publisherMDPI AGen
dcterms.subjectgoatsen
dcterms.subjectpeste des petits ruminantsen
dcterms.subjectsheepen
dcterms.subjectsmall ruminantsen
dcterms.subjectvaccinationen
dcterms.subjectvirusesen
dcterms.typeJournal Articleen

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