Survey year | Cluster type | Significant enumeration areas (clusters) detected | Coordinates/radius | Populations | Cases | RR | LLR | P value |
---|---|---|---|---|---|---|---|---|
2005 | Primary | 402, 287, 155, 19, 293, 451, 302,369, 91, 236, 121, 139, 438, 23,510, 359, 310, 271, 122, 174, 10,399, 531, 391, 331, 476, 176,308, 135, 333, 491, 18, 452, 24 | (9.030245 N, 38.857304 E)/255.37 km | 252 | 58 | 2.22 | 12.03 |  ≤ 0.001 |
 | Secondary | 265, 221 | (8.001711 N, 34.537071 E) /27.39 km | 21 | 7 | 2.58 | 2.81 | 0.890 |
2011 | Primary | 564, 230, 336, 506, 491, 201, | 9.555410 N, 40.326164 E) /180.77 km | 470 | 113 | 1.89 | 18.56 |  ≤ 0.001 |
 | Secondary | 137, 244, 36 | (10.637520 N,35.719208 E) /42.00 km | 84 | 31 | 2.69 | 13.59 |  ≤ 0.001 |
2016 | Primary | 319, 149, 290, 71, 49, 230, 353, 83, 286, 236, 252, 402, 412, 90,211,330, 539, 451, 560, 475,261, 509, 155, 287, 428, 264, 61,19,293, 225, 302, 639, 110, 247,159, 15, 414, 582, 153, 464, 305,635, 170, 195, 59, 645, 108, 314,144, 608, 487, 624, 626, 100,145, 31,369, 112, 532, 91, 107,147, 339, 463, 11, 274, 14 | (8.152924 N, 39.893330 E)/175.24 km | 1324 | 381 | 1.86 | 39.79 |  ≤ 0.001 |
 | Secondary | 411 | (8.453819 N,36.343666 E 0 km | 174 | 64 | 1.82 | 11.81 | 0.001 |