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Intervene before leaving: clustered lot quality assurance sampling to monitor vaccination coverage at health district level before the end of a yellow fever and measles vaccination campaign in Sierra Leone in 2009 Full Text
BMC Public Health, 06/22/2012
Pezzoli L et al. – Clustered lot quality assurance sampling (C–LQAS) during the vaccination campaign was informative to identify areas requiring mop–up activities to reach the coverage target prior to leaving the region. The only district where mop–up activities seemed to be unsuccessful might have had logistical difficulties that should be further investigated and resolved.
