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Table 1 Changes in surface area (in km2) of prevalence of infection categories in Burundi for 2008–2011 and 2014

From: Spatiotemporal distribution and population at risk of soil-transmitted helminth infections following an eight-year school-based deworming programme in Burundi, 2007–2014

  2008 2009 2010 2011 2014
Prevalence of A. lumbricoides infections
 < 2% 78 130 586 791 605
 2–10% 8348 9510 15,017 15,404 13,214
 10–20% 9104 8799 7113 7370 7046
 20–50% 10,311 9404 5127 4277 6802
 50–80% 2 0 0 0 176
 > 80% 0 0 0 0 0
Prevalence of T. trichiura infections
 < 2% 346 231 2634 3189 13,006
 2–10% 19,844 17,679 23,901 23,804 13,730
 10–20% 7237 8915 1307 849 821
 20–50% 416 1018 0 0 286
 50–80% 0 0 0 0 0
 > 80% 0 0 0 0 0
Prevalence of hookworm infections
 < 2% 165 491 701 3223 1061
 2–10% 7770 10,890 12,908 22,344 12,305
 10–20% 15,262 15,299 13,757 2276 11,397
 20–50% 4646 1162 476 0 3079
 50–80% 0 0 0 0 0
 > 80% 0 0 0 0 0