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Table 2 Malaria cases (positive blood smears) and Annual Parasite Index (API) in Indian reserves and environmental zones of Rondônia State, Brazilian Amazon.

From: Spatial heterogeneity of malaria in Indian reserves of Southwestern Amazonia, Brazil

Indian reserve 2003 2004 2005 2006 Mean
  Positive API Positive API Positive API Positive API API/1000
Zone 1 – Guaporé/Madeira River basin*
Igarapé Lage 54 15.30% 174.76 33 2.09% 106.80 61 7.96% 197.41 141 9.66% 456.31 233.82
Igarapé Ribeirão 13 3.68% 55.08 39 2.47% 165.25 59 7.70% 250.00 72 4.93% 305.08 193.86
Karipuna 21 5.95% 840.00 10 0.63% 400.00 0 0.00% 0.00 4 0.27% 160.00 350.00
Karitiana 34 9.63% 149.12 37 2.34% 162.28 23 3.00% 100.88 42 2.88% 184.21 149.12
Kaxarary 111 31.44% 406.59 152 9.61% 556.78 91 11.88% 333.33 54 3.70% 197.80 373.63
Pacaas Novas 78 22.10% 30.64 269 17.01% 105.66 309 40.34% 121.37 489 33.49% 192.07 112.43
Rio Guaporé 1 0.28% 11.24 0 0.00% 0.00 1 0.13% 11.24 10 0.68% 112.36 33.71
Sagarana 1 0.28% 3.83 6 0.38% 22.99 4 0.52% 15.33 2 0.14% 7.66 12.45
Subtotal 313 78.90 546 137.64 548 138.14 814 205.19 139.97
Zone 2 – Pacaas-Novos plateau**
Rio Branco 3 0.85% 5.57 5 0.32% 9.28 103 13.45% 191.09 44 3.01% 81.63 71.89
Uru-Eu-Wau-au 12 3.40% 53.10 7 0.44% 30.97 12 1.57% 53.10 31 2.12% 137.17 68.58
Subtotal 15 19.61 12 15.69 115 150.33 75 98.04 70.92
Zone 3 – Ji-Paraná/Aripuanã River basins***
Igarapé Lourdes 16 4.53% 36.20 7 0.44% 15.84 7 0.91% 15.84 9 0.62% 20.36 22.06
Roosevelt 4 1.13% 6.07 1001 63.31% 1518.97 92 12.01% 139.61 549 37.60% 833.08 624.43
Sete de Setembro 4 1.13% 4.83 13 0.82% 15.68 3 0.39% 3.62 12 0.82% 14.48 9.65
Tubarão Latundê 1 0.28% 5.85 2 0.13% 11.70 1 0.13% 5.85 1 0.07% 5.85 7.31
Subtotal 25 11.90 1023 486.91 103 49.02 571 271.78 204.90
Total 353 100% 51.66 1581 100% 231.38 766 100% 112.10 1460 100% 213.67 152.20
  1. * No cases of malaria were recorded in Rio Negro Ocaia reserves (Zone 1).
  2. ** No cases of malaria were recorded in Kwazá, Massaco and Rio Mequens reserves (Zone 2).
  3. *** No cases of malaria were recorded in Aripuanã and Rio Omerê, reserves (Zone 3).