Measles vaccination coverage in high-incidence areas of the Western Cape, following the mass vaccination campaign

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dc.contributor.authorBernhardt, G L
dc.contributor.authorCameron, N A
dc.contributor.authorWillems, B
dc.contributor.authorBoulle, A
dc.contributor.authorCoetzee, D
dc.date.accessioned2021-10-08T07:18:06Z
dc.date.available2021-10-08T07:18:06Z
dc.date.issued2013
dc.description.abstractBACKGROUND: Despite significant advances in measles control, large epidemics occurred in many African countries in 2009 - 2011, including South Africa. South Africa's control strategy includes mass vaccination campaigns about every 4 years, the last of which was conducted nationally in April 2010 and coincided with the epidemic. AIM: A community survey was conducted in the Western Cape to assess measles vaccination coverage attained by routine and campaign services, in children aged 6 months to 59 months at the time of the mass campaign, from high-incidence areas. METHODS: Households were consecutively sampled in high-incidence areas identified using measles epidemic surveillance data. A caregiver history of campaign vaccination and routine vaccination status from the child's Road to Health card were collected. Pre- and post-campaign immunity was estimated by analytical methods. RESULTS: Of 8 332 households visited, there was no response at 3 435 (41.2%); 95.1% (1 711/1 800) of eligible households participated; and 91.2% (1 448/1 587; 95% confidence interval 86 - 94%) of children received a campaign vaccination. Before the campaign, 33.0% (103/312) of 9 - 17-month-olds had not received a measles vaccination, and this was reduced to 4.5% (14/312) after the campaign. Of the 1 587 children, 61.5% were estimated to have measles immunity before the campaign, and this increased to 94.0% after the campaign. DISCUSSION: Routine services had failed to achieve adequate herd immunity in areas with suspected highly mobile populations. Mass campaigns in such areas in the Western Cape significantly increased coverage. Extra vigilance is required to monitor and sustain adequate coverage in these areas.
dc.identifier.apacitationBernhardt, G. L., Cameron, N. A., Willems, B., Boulle, A., & Coetzee, D. (2013). Measles vaccination coverage in high-incidence areas of the Western Cape, following the mass vaccination campaign. <i>South African Medical Journal</i>, 103(3), 181 - 177. http://hdl.handle.net/11427/34905en_ZA
dc.identifier.chicagocitationBernhardt, G L, N A Cameron, B Willems, A Boulle, and D Coetzee "Measles vaccination coverage in high-incidence areas of the Western Cape, following the mass vaccination campaign." <i>South African Medical Journal</i> 103, 3. (2013): 181 - 177. http://hdl.handle.net/11427/34905en_ZA
dc.identifier.citationBernhardt, G.L., Cameron, N.A., Willems, B., Boulle, A. & Coetzee, D. 2013. Measles vaccination coverage in high-incidence areas of the Western Cape, following the mass vaccination campaign. <i>South African Medical Journal.</i> 103(3):181 - 177. http://hdl.handle.net/11427/34905en_ZA
dc.identifier.issn0038-2469
dc.identifier.ris TY - Journal Article AU - Bernhardt, G L AU - Cameron, N A AU - Willems, B AU - Boulle, A AU - Coetzee, D AB - BACKGROUND: Despite significant advances in measles control, large epidemics occurred in many African countries in 2009 - 2011, including South Africa. South Africa's control strategy includes mass vaccination campaigns about every 4 years, the last of which was conducted nationally in April 2010 and coincided with the epidemic. AIM: A community survey was conducted in the Western Cape to assess measles vaccination coverage attained by routine and campaign services, in children aged 6 months to 59 months at the time of the mass campaign, from high-incidence areas. METHODS: Households were consecutively sampled in high-incidence areas identified using measles epidemic surveillance data. A caregiver history of campaign vaccination and routine vaccination status from the child's Road to Health card were collected. Pre- and post-campaign immunity was estimated by analytical methods. RESULTS: Of 8 332 households visited, there was no response at 3 435 (41.2%); 95.1% (1 711/1 800) of eligible households participated; and 91.2% (1 448/1 587; 95% confidence interval 86 - 94%) of children received a campaign vaccination. Before the campaign, 33.0% (103/312) of 9 - 17-month-olds had not received a measles vaccination, and this was reduced to 4.5% (14/312) after the campaign. Of the 1 587 children, 61.5% were estimated to have measles immunity before the campaign, and this increased to 94.0% after the campaign. DISCUSSION: Routine services had failed to achieve adequate herd immunity in areas with suspected highly mobile populations. Mass campaigns in such areas in the Western Cape significantly increased coverage. Extra vigilance is required to monitor and sustain adequate coverage in these areas. DA - 2013 DB - OpenUCT DP - University of Cape Town IS - 3 J1 - South African Medical Journal LK - https://open.uct.ac.za PY - 2013 SM - 0038-2469 T1 - Measles vaccination coverage in high-incidence areas of the Western Cape, following the mass vaccination campaign TI - Measles vaccination coverage in high-incidence areas of the Western Cape, following the mass vaccination campaign UR - http://hdl.handle.net/11427/34905 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/34905
dc.identifier.vancouvercitationBernhardt GL, Cameron NA, Willems B, Boulle A, Coetzee D. Measles vaccination coverage in high-incidence areas of the Western Cape, following the mass vaccination campaign. South African Medical Journal. 2013;103(3):181 - 177. http://hdl.handle.net/11427/34905.en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Public Health and Family Medicine
dc.publisher.facultyFaculty of Health Sciences
dc.sourceSouth African Medical Journal
dc.source.journalissue3
dc.source.journalvolume103
dc.source.pagination181 - 177
dc.source.urihttps://dx.doi.org/10.7196/SAMJ.6196
dc.subject.otherAdult
dc.subject.otherCaregivers
dc.subject.otherChild, Preschool
dc.subject.otherConfidence Intervals
dc.subject.otherData Collection
dc.subject.otherDisease Outbreaks
dc.subject.otherFemale
dc.subject.otherHumans
dc.subject.otherImmunity
dc.subject.otherIncidence
dc.subject.otherInfant
dc.subject.otherMale
dc.subject.otherMass Vaccination
dc.subject.otherMeasles
dc.subject.otherMeasles Vaccine
dc.titleMeasles vaccination coverage in high-incidence areas of the Western Cape, following the mass vaccination campaign
dc.typeJournal Article
uct.type.publicationResearch
uct.type.resourceJournal Article
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