{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,2]],"date-time":"2025-10-02T11:41:03Z","timestamp":1759405263923,"version":"build-2065373602"},"reference-count":17,"publisher":"Elsevier BV","license":[{"start":{"date-parts":[[2023,4,1]],"date-time":"2023-04-01T00:00:00Z","timestamp":1680307200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2023,4,1]],"date-time":"2023-04-01T00:00:00Z","timestamp":1680307200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2023,2,13]],"date-time":"2023-02-13T00:00:00Z","timestamp":1676246400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000030","name":"Centers for Disease Control and Prevention","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100000030","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000865","name":"Bill and Melinda Gates Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100000865","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Vaccine"],"published-print":{"date-parts":[[2023,4]]},"DOI":"10.1016\/j.vaccine.2023.02.035","type":"journal-article","created":{"date-parts":[[2023,2,17]],"date-time":"2023-02-17T15:57:50Z","timestamp":1676649470000},"page":"A48-A57","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":2,"special_numbering":"S1","title":["Genetic and epidemiological description of an outbreak of circulating vaccine-derived polio-virus type 2 (cVDPV2) in Angola, 2019\u20132020"],"prefix":"10.1016","volume":"41","author":[{"given":"Alda","family":"Morais","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joana","family":"Morais","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Miguel","family":"Felix","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zoraima","family":"Neto","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Val\u00f3dia","family":"Madaleno","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Abubakar Sadiq","family":"Umar","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nirakar","family":"Panda","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fekadu","family":"Lemma","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jos\u00e9 Alexandre Lifande","family":"Chivale","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Danielle Gra\u00e7a","family":"Cavalcante","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elizabeth","family":"Davlantes","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Margherita","family":"Ghiselli","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Catherine","family":"Espinosa","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ari","family":"Whiteman","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jane","family":"Iber","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elizabeth","family":"Henderson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kelley","family":"Bullard","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jaume","family":"Jorba","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cara C.","family":"Burns","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ousmane","family":"Diop","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nicksy","family":"Gumede","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lerato","family":"Seakamela","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wayne","family":"Howard","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alean","family":"Frawley","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"year":"2020","series-title":"Standard operating procedures: responding to a poliovirus event or outbreak, version 3.1","author":"Global Polio Eradication Initiative (GPEI)","key":"10.1016\/j.vaccine.2023.02.035_b0005"},{"issue":"25","key":"10.1016\/j.vaccine.2023.02.035_b0010","doi-asserted-by":"crossref","first-page":"784","DOI":"10.15585\/mmwr.mm6925a4","article-title":"Progress Toward Polio Eradication - Worldwide, January 2018-March 2020","volume":"69","author":"Chard","year":"2020","journal-title":"MMWR Morb Mortal Wkly Rep"},{"issue":"16","key":"10.1016\/j.vaccine.2023.02.035_b0015","doi-asserted-by":"crossref","first-page":"489","DOI":"10.15585\/mmwr.mm6916a1","article-title":"Update on Vaccine-Derived Poliovirus Outbreaks - Worldwide, July 2019-February 2020","volume":"69","author":"Alleman","year":"2020","journal-title":"MMWR Morb Mortal Wkly Rep"},{"issue":"6","key":"10.1016\/j.vaccine.2023.02.035_b0020","doi-asserted-by":"crossref","first-page":"693","DOI":"10.1586\/14760584.2016.1140041","article-title":"Polio endgame: the global switch from tOPV to bOPV","volume":"15","author":"Garon","year":"2016","journal-title":"Expert Rev Vaccines"},{"key":"10.1016\/j.vaccine.2023.02.035_b0025","unstructured":"WHO-UNICEF estimates of IPV1 coverage. Retrieved on 2 May 2021 from: https:\/\/apps.who.int\/immunization_monitoring\/globalsummary\/timeseries\/tswucoverageipv1.html."},{"key":"10.1016\/j.vaccine.2023.02.035_b0030","unstructured":"Global Polio Eradication Initiative (GPEI). Assessing Vaccination Coverage Levels Using Clustered Lot Quality Assurance Sampling \u2013 Field Manual (27 April 2012). Retrieved on 2 April 2021 from: https:\/\/polioeradication.org\/wp-content\/uploads\/2016\/09\/Assessing-Vaccination-Coverage-Levels-Using-Clustered-LQAS_Apr2012_EN.pdf."},{"key":"10.1016\/j.vaccine.2023.02.035_b0035","unstructured":"Department of Vaccines and Biologicals, World Health Organization (WHO). Guidelines for environmental surveillance of poliovirus circulation (March 2003). Retrieved on 5 April 2021 from: https:\/\/polioeradication.org\/wp-content\/uploads\/2016\/07\/WHO_V-B_03.03_eng.pdf."},{"key":"10.1016\/j.vaccine.2023.02.035_b0040","unstructured":"US Centers for Disease Control and Prevention (CDC). Poliovirus Laboratory Testing. Retrieved on 1 March 2021 from: https:\/\/www.cdc.gov\/polio\/what-is-polio\/lab-testing\/index.html."},{"key":"10.1016\/j.vaccine.2023.02.035_b0045","doi-asserted-by":"crossref","first-page":"227","DOI":"10.1007\/978-1-4939-3292-4_11","article-title":"Phylogenetic Analysis of Poliovirus Sequences","volume":"1387","author":"Jorba","year":"2016","journal-title":"Methods Mol Biol"},{"issue":"8","key":"10.1016\/j.vaccine.2023.02.035_b0050","doi-asserted-by":"crossref","first-page":"754","DOI":"10.1093\/bioinformatics\/17.8.754","article-title":"MRBAYES: Bayesian inference of phylogenetic trees","volume":"17","author":"Huelsenbeck","year":"2001","journal-title":"Bioinformatics"},{"issue":"45","key":"10.1016\/j.vaccine.2023.02.035_b0055","doi-asserted-by":"crossref","first-page":"1024","DOI":"10.15585\/mmwr.mm6845a4","article-title":"Update on Vaccine-Derived Poliovirus Outbreaks - Worldwide, January 2018-June 2019","volume":"68","author":"Jorba","year":"2019","journal-title":"MMWR Morb Mortal Wkly Rep"},{"year":"2016","series-title":"Classification and reporting of vaccine-derived polioviruses (VDPV)","author":"Initiative","key":"10.1016\/j.vaccine.2023.02.035_b0060"},{"issue":"9","key":"10.1016\/j.vaccine.2023.02.035_b0065","doi-asserted-by":"crossref","first-page":"4429","DOI":"10.1128\/JVI.02354-07","article-title":"Calibration of multiple poliovirus molecular clocks covering an extended evolutionary range","volume":"82","author":"Jorba","year":"2008","journal-title":"J Virol"},{"key":"10.1016\/j.vaccine.2023.02.035_b0070","unstructured":"Global Polio Eradication Initiative (GPEI). Surveillance Indicators \u2013 Acute Flaccid Paralysis (AFP) Surveillance. Retrieved on 1 March 2021 from: https:\/\/polioeradication.org\/polio-today\/polio-now\/surveillance-indicators\/."},{"issue":"34","key":"10.1016\/j.vaccine.2023.02.035_b0075","doi-asserted-by":"crossref","first-page":"1129","DOI":"10.15585\/mmwr.mm7034a1","article-title":"Progress Toward Polio Eradication \u2014 Worldwide, January 2019\u2013June 2021","volume":"70","author":"Bigouette","year":"2021","journal-title":"MMWR Morb Mortal Wkly Rep"},{"key":"10.1016\/j.vaccine.2023.02.035_b0080","unstructured":"Censo 2014. Retrieved on 2 April 2021 from: http:\/\/censo.ine.gov.ao\/xportal\/xmain?xpid=censo2014."},{"key":"10.1016\/j.vaccine.2023.02.035_b0085","unstructured":"Statement following the Twenty-Eighth IHR Emergency Committee for Polio. Retrieved on 19 June 2021 from: https:\/\/www.who.int\/news\/item\/21-05-2021-statement-following-the-twenty-eighth-ihr-emergency-committee-for-polio ."}],"container-title":["Vaccine"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0264410X23001706?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0264410X23001706?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,10,2]],"date-time":"2025-10-02T11:25:36Z","timestamp":1759404336000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0264410X23001706"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,4]]},"references-count":17,"alternative-id":["S0264410X23001706"],"URL":"https:\/\/doi.org\/10.1016\/j.vaccine.2023.02.035","relation":{},"ISSN":["0264-410X"],"issn-type":[{"type":"print","value":"0264-410X"}],"subject":[],"published":{"date-parts":[[2023,4]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Genetic and epidemiological description of an outbreak of circulating vaccine-derived polio-virus type 2 (cVDPV2) in Angola, 2019\u20132020","name":"articletitle","label":"Article Title"},{"value":"Vaccine","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.vaccine.2023.02.035","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2023 Published by Elsevier Ltd.","name":"copyright","label":"Copyright"}]}}