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Table 1 Summary of Gezira P. falciparum prevalence data from 88 survey locations (968 surveys) from 1999 to 2009 showing annual average infection prevalence, the number of locations with no positive cases, those with ≥5% prevalence and the sample size by residence and year

From: The spatial-temporal clustering of Plasmodium falciparum infection over eleven years in Gezira State, The Sudan

  % P. falciparum positive (number examined) Survey locations (%) with no positive P. falciparum samples Survey locations (%) with P. falciparum prevalence ≥5%
1999 8.6 (8,523) 15 (17.0) 51 (58.0)
2000 4.0 (8,928) 17 (19.3) 28 (31.8)
2001 2.1 (8,667) 39 (44.3) 14 (15.9)
2002 3.7 (8,783) 29 (32.9) 24 (27.3)
2003 2.9 (8,792) 45 (51.1) 14 (15.9)
2004 2.0 (8,763) 32 (36.4) 10 (11.4)
2005 1.9 (8,716) 59 (67.0) 12 (13.6)
2006 2.3 (8,733) 44 (50.0) 16 (18.2)
2007 1.1 (8,794) 49 (55.7) 4 (4.5)
2008 2.1 (8,571) 38 (43.2) 11 (12.5)
2009 1.6 (8,752) 55 (62.5) 10 (11.4)
Total 2.9 (96,022)