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Volume 15, Number 12—December 2009


Possible Interruption of Malaria Transmission, Highland Kenya, 2007–2008

Chandy C. JohnComments to Author , Melissa A. Riedesel, Ng’wena G. Magak, Kim A. Lindblade, David M. Menge, James S. Hodges, John M. Vulule, and Willis Akhwale
Author affiliations: University of Minnesota Medical School, Minneapolis, Minnesota, USA (C.C. John, M.A. Riedesel, D.M. Menge); Moi University School of Medicine, Eldoret, Kenya (N.G. Magak); Centers for Disease Control and Prevention, Atlanta, Georgia, USA (K.A. Lindblade); University of Minnesota, Minneapolis (J.S. Hodges); Kenya Medical Research Institute, Kisian, Kenya (J.M. Vulule); Ministry of Health, Nairobi, Kenya (W. Akhwale)

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Table 5

Median monthly Anopheles spp. mosquitoes per household in Kipsamoite and Kapsisiwya, Kenya, April 2003–March 2008*

Year Kipsamoite
Median monthly Anopheles spp. mosquito density (IQR)† p value Median monthly Anopheles spp. mosquito density (IQR)† p value
2003 Apr–2004 Mar 0.079 (0.100) Ref 0.091 (0.112) Ref
2004 Apr–2005 Mar 0.014 (0.033) 0.003 0.023 (0.031) 0.005
2005 Apr–2006 Mar 0.000 (0.007) <0.001 0.009 (0.012) <0.001
2006 Apr–2007 Mar 0.000 (0.004) <0.001 0.006 (0.018) 0.002
2007 Apr–2008 Mar 0.000 (0.000) <0.001 0.000 (0.000) 0.002

*IQR, interquartile range (difference between 75th and 25th percentile values); ref, reference.
†Median vector density was compared by using the Wilcoxon rank-sum test.

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