{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,29]],"date-time":"2026-10-29T06:56:56Z","timestamp":1793257016852,"version":"4.5.0"},"reference-count":33,"publisher":"Cambridge University Press (CUP)","issue":"1","license":[{"start":{"date-parts":[[2011,3,22]],"date-time":"2011-03-22T00:00:00Z","timestamp":1300752000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Epidemiol. Infect."],"published-print":{"date-parts":[[2012,1]]},"abstract":"<jats:title>SUMMARY<\/jats:title><jats:p>We used the clustered lot quality assurance sampling (clustered-LQAS) technique to identify districts with low immunization coverage and guide mop-up actions during the last 4 days of a combined oral polio vaccine (OPV) and yellow fever (YF) vaccination campaign conducted in Cameroon in May 2009. We monitored 17 pre-selected districts at risk for low coverage. We designed LQAS plans to reject districts with YF vaccination coverage &lt;90% and with OPV coverage &lt;95%. In each lot the sample size was 50 (five clusters of 10) with decision values of 3 for assessing OPV and 7 for YF coverage. We \u2018rejected\u2019 10 districts for low YF coverage and 14 for low OPV coverage. Hence we recommended a 2-day extension of the campaign. Clustered-LQAS proved to be useful in guiding the campaign vaccination strategy before the completion of the operations.<\/jats:p>","DOI":"10.1017\/s0950268811000331","type":"journal-article","created":{"date-parts":[[2011,3,22]],"date-time":"2011-03-22T11:00:23Z","timestamp":1300791623000},"page":"14-26","source":"Crossref","is-referenced-by-count":12,"title":["Clustered lot quality assurance sampling: a tool to monitor immunization coverage rapidly during a national yellow fever and polio vaccination campaign in Cameroon, May 2009"],"prefix":"10.1017","volume":"140","author":[{"given":"L.","family":"PEZZOLI","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R.","family":"TCHIO","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A. D.","family":"DZOSSA","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"S.","family":"NDJOMO","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A.","family":"TAKEU","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"B.","family":"ANYA","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J.","family":"TICHA","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"O.","family":"RONVEAUX","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R. F.","family":"LEWIS","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2011,3,22]]},"reference":[{"key":"S0950268811000331_ref031","doi-asserted-by":"publisher","DOI":"10.1186\/1742-7622-5-25"},{"key":"S0950268811000331_ref024","doi-asserted-by":"publisher","DOI":"10.2471\/BLT.07.042127"},{"key":"S0950268811000331_ref001","doi-asserted-by":"publisher","DOI":"10.1590\/S1020-49892004001200013"},{"key":"S0950268811000331_ref011","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pntd.0000483"},{"key":"S0950268811000331_ref022","unstructured":"22. Global Polio Eradication Initiative. Wild poliovirus weekly update, August 2010 (http:\/\/www.polioeradication.org\/casecount.asp)."},{"key":"S0950268811000331_ref004","first-page":"540","article-title":"Clustered lot quality assurance sampling to assess immunisation coverage: increasing rapidity and maintaining precision","volume":"15","author":"Pezzoli","year":"2010","journal-title":"Tropical Medicine and International Health"},{"key":"S0950268811000331_ref019","first-page":"244","article-title":"Performance of acute flaccid paralysis (AFP) surveillance and incidence of poliomyelitis, 2010 (data received in WHO headquarters as of June 1 2010)","volume":"85","year":"2010","journal-title":"Weekly Epidemiological Record"},{"key":"S0950268811000331_ref005","first-page":"501","article-title":"Using lot quality assurance sampling to improve immunization coverage in Bangladesh","volume":"79","author":"Tawfik","year":"2001","journal-title":"Bulletin of the World Health Organization"},{"key":"S0950268811000331_ref012","first-page":"317","article-title":"Yellow fever situation in Africa and South America, 2005","volume":"81","year":"2006","journal-title":"Weekly Epidemiological Record"},{"key":"S0950268811000331_ref021","first-page":"225","article-title":"Eradicating polio: its feasibility in near future?","volume":"40","author":"Singh","year":"2008","journal-title":"Journal of Communicable Diseases"},{"key":"S0950268811000331_ref002","unstructured":"2. WHO.Monitoring immunization services using the Lot Quality Technique. Geneva: World Health Organization, 1996."},{"key":"S0950268811000331_ref006","doi-asserted-by":"publisher","DOI":"10.1093\/intqhc\/11.2.139"},{"key":"S0950268811000331_ref014","doi-asserted-by":"publisher","DOI":"10.1086\/511869"},{"key":"S0950268811000331_ref025","unstructured":"25. Stata Corporation. Statistical software: release 10 (computer program), 2008."},{"key":"S0950268811000331_ref016","doi-asserted-by":"publisher","DOI":"10.4314\/thrb.v10i2.14348"},{"key":"S0950268811000331_ref026","doi-asserted-by":"publisher","DOI":"10.1157\/13106814"},{"key":"S0950268811000331_ref028","first-page":"521","article-title":"Estimating vaccination coverage using parental recall, vaccination cards, and medical records","volume":"113","author":"Bolton","year":"1998","journal-title":"Public Health Reports"},{"key":"S0950268811000331_ref023","unstructured":"23. Global Polio Eradication Initiative. Guidelines for independent monitoring of polio supplementary immunization activities (SIA), October 2011 (http:\/\/www.polioeradication.org\/Portals\/0\/Document\/Resources\/PolioEradicators\/IndependentMonitoringGuidelines_20101124.pdf)."},{"key":"S0950268811000331_ref008","doi-asserted-by":"publisher","DOI":"10.1111\/j.1467-985X.2008.00572.x"},{"key":"S0950268811000331_ref018","doi-asserted-by":"publisher","DOI":"10.1016\/j.vaccine.2008.07.101"},{"key":"S0950268811000331_ref030","doi-asserted-by":"publisher","DOI":"10.1093\/heapol\/8.3.217"},{"key":"S0950268811000331_ref020","doi-asserted-by":"publisher","DOI":"10.1056\/NEJMp1005405"},{"key":"S0950268811000331_ref032","unstructured":"32. Institut National de la Statistique. Post-campaign coverage survey following the preventive vaccination campaign against yellow fever and poliomyelitis in high risk districts of Cameroon in May 2009 [in French]. Yaound\u00e9, Cameroon, June 2009."},{"key":"S0950268811000331_ref029","doi-asserted-by":"crossref","first-page":"37","DOI":"10.1177\/135965350801302S10","article-title":"A novel sequential sampling technique for the surveillance of transmitted HIV drug resistance by cross-sectional survey for use in low resource settings","volume":"13","author":"Myatt","year":"2008","journal-title":"Antiviral Therapy"},{"key":"S0950268811000331_ref007","doi-asserted-by":"publisher","DOI":"10.1093\/ije\/dym092"},{"key":"S0950268811000331_ref033","first-page":"98","article-title":"A simplified general method for cluster-sample surveys of health in developing countries","volume":"44","author":"Bennett","year":"1991","journal-title":"World Health Statistics Quarterly Rapport Trimestriel de Statistiques Sanitaires Mondiales"},{"key":"S0950268811000331_ref017","doi-asserted-by":"crossref","first-page":"1078","DOI":"10.4269\/ajtmh.2006.74.1078","article-title":"Seroprevalence and distribution of Flaviviridae, Togaviridae, and Bunyaviridae arboviral infections in rural Cameroonian adults","volume":"74","author":"Kuniholm","year":"2006","journal-title":"American Journal of Tropical Medicine and Hygiene"},{"key":"S0950268811000331_ref015","doi-asserted-by":"publisher","DOI":"10.1186\/1741-7015-6-3"},{"key":"S0950268811000331_ref003","first-page":"115","article-title":"Lot quality assurance sampling: single- and double-sampling plans","volume":"44","author":"Lemeshow","year":"1991","journal-title":"World Health Statistics Quarterly"},{"key":"S0950268811000331_ref009","doi-asserted-by":"publisher","DOI":"10.1186\/1742-7622-5-6"},{"key":"S0950268811000331_ref013","first-page":"97","article-title":"Yellow fever in Africa and South America, 2007","volume":"84","year":"2009","journal-title":"Weekly Epidemiological Record"},{"key":"S0950268811000331_ref027","doi-asserted-by":"publisher","DOI":"10.1542\/peds.99.5.e3"},{"key":"S0950268811000331_ref010","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-3156.2009.02231.x"}],"container-title":["Epidemiology and Infection"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0950268811000331","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,6,5]],"date-time":"2023-06-05T21:27:49Z","timestamp":1686000469000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0950268811000331\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2011,3,22]]},"references-count":33,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2012,1]]}},"alternative-id":["S0950268811000331"],"URL":"https:\/\/doi.org\/10.1017\/s0950268811000331","relation":{},"ISSN":["0950-2688","1469-4409"],"issn-type":[{"value":"0950-2688","type":"print"},{"value":"1469-4409","type":"electronic"}],"subject":[],"published":{"date-parts":[[2011,3,22]]}}}