Table 2 Attack rates and incidence rates of seroconversions in antibody levels schistosoma spp
Parasite | Region | No. of sero- conversions | SusceptiblesM at risk | Person-months of travel | Attack rate ° | Incidence rate per 1000 person-months ° | ||
|---|---|---|---|---|---|---|---|---|
Schistosoma spp. | All regions | 5 | 979 | 782.5 | 0.51% | (0.19-1.1%) | 6.4 | (2.3-14.2) |
|  |    Africa | 0 | 290 | 218.7 | 0% | NA | 0 | NA |
|  |    Asia | 4 | 532 | 444.1 | 0.75% | (0.24-1.8%) | 9.0 | (2.9-21.7) |
|  |    Latin America | 1 | 157 | 119.8 | 0.64% | (0.032-3.1%) | 8.3 | (0.42-41.2) |
S. stercoralis | All regions | 3 | 1178 | 936.4 | 0.25% | (0.065-0.69%) | 3.2 | (0.81-8.7) |
|  |    Africa | 0 | 290 | 216.4 | 0% | NA | 0 | NA |
|  |    Asia | 3 | 554 | 463.5 | 0.54% | (0.14-1.5%) | 6.5 | (1.6-17.6) |
|  |    Latin America | 0 | 334 | 256.4 | 0% | NA | 0 | NA |
Filaria spp. | All regions | 1 | 1166 | 930.1 | 0.086% | (0.004-0.42%) | 1.1 | (0.054-5.3) |
|  |    Africa | 0 | 285 | 214.7 | 0% | NA | 0 | NA |
|  |    Asia | 1 | 549 | 459.8 | 0.18% | (0.009-0.90%) | 2.2 | (0.11-10.7) |
|  |    Latin America | 0 | 332 | 255.6 | 0% | NA | 0 | NA |
T. canis | All regions | 1 | 1185 | 943.3 | 0.084% | (0.004-0.42%) | 1.1 | (0.053-5.2) |
|  |    Africa | 1 | 293 | 220.9 | 0.34% | (0.017-1.7%) | 4.5 | (0.23-22.3) |
|  |    Asia | 0 | 560 | 466.6 | 0% | NA | 0 | NA |
|  |    Latin America | 0 | 332 | 255,8 | 0% | NA | 0 | NA |
° 95% confidence interval between brackets | NA: Not applicable |  |  |  | ||||