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Time. April-August 2008. January-February 2009. April-August 2009. Pre-vaccination. Post-vaccination. Phase 2, n 2 ≈328. OCV intervention campaign. Phase 1, n 1 ≈328. Periurban, n≈164. Rural, n≈164. Rural, n≈164. Periurban, n≈164. Vaccinated, n≈82. Un- vaccinated, n≈82.
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Time April-August 2008 January-February 2009 April-August 2009 Pre-vaccination Post-vaccination Phase 2, n2≈328 OCV intervention campaign Phase 1, n1≈328 Periurban, n≈164 Rural, n≈164 Rural, n≈164 Periurban, n≈164 Vaccinated, n≈82 Un- vaccinated, n≈82 F, n≈82 M, n≈82 F, n≈82 M, n≈82 F, n≈41 M, n≈41 F, n≈41 M, n≈41 ntot=n1+n2≈656