Skip to main content
. 2015 Oct 24;8:558. doi: 10.1186/s13071-015-1138-1

Table 4.

Changes in infection intensity and FOI for each of 32 sentinel sites with longitudinal data collected prior and one year after praziquantel treatment as part of the monitoring and evaluation component of the Ugandan schistosomiasis control programme

BL infection intensity Category District Sentinel Site No. in cohort (n) BL FOI (wppy) Infection intensity with S. mansoni (epg) Ratio of FOI in relation to BL
BL FY1 FY2 FY3 ζ1 ζ2 ζ3
High Bugiri Buyondo 75 26.97 444.4 59.4a 16.7a 3.5a 0.179a 0.035a 0.015a
Wakawaka 30 30.01 746.3 384.8 539.1 160.0 1.574b 1.698b 0.945
Busia Buloosi 72 24.78 598.1 99.7a 52.4a 24.0a 0.357a 0.220a 0.099a
Hoima Kibiro 57 54.87 1000.3 408.6a 153.7a 247.5a 1.038 0.454a 0.553a
Runga 20 47.35 710.4 404.6 230.4a 110.4a 1.444 0.976 0.727
Tonya 9 61.81 1096.0 228.0a 48.0a 48.0a 0.566 0.088a 0.001a
Masindi Walukubwa 20 62.28 895.2 314.2a 108.9a 974.8 0.591 0.266a 1.346
Mayuge Bugoto LV 45 24.51 616.5 123.1a 61.8a 50.4a 0.484a 0.235a 0.085a
Bwondha 33 28.94 529.5 83.3a 133.8a 61.1a 0.558a 0.604a 0.263a
Nebbi Panyimur 67 31.72 597.6 327.9a 84.6a 49.1a 1.993b 0.121a 0.189a
Medium Bugiri Busiro 57 12.06 154.9 141.4 51.1a 108.5 1.891b 0.572a 1.312
Busia Bwaniha 70 20.38 386.1 58.7a 25.0a 42.7a 0.513a 0.187a 0.251a
Hoima Kasenyi 55 15.46 299.1 347.5 208.9 201.3 1.626b 0.969 1.264
Masindi Butiaba 31 14.32 300.4 98.3 1.5a 27.0a 0.880 0.009a 0.424a
Kabolwa 23 14.59 452.9 43.8a 0.0a 0.0a 0.198a 0.001a 0.001a
Wanseko 57 10.12 114.2 31.2 20.6a 0.0a 0.465a 0.286a 0.000a
Nebbi Kinju 52 15.21 104.4 52.9 16.9a 81.1 1.196 0.444a 1.267
Pokwero 59 4.86 105.8 29.0a 1.7a 0.0a 0.929 0.119a 0.023a
Low Bugiri Kibimba 41 0.36 13.5 16.2 15.4 0.0a 3.584b 2.214b 0.000a
Kibuye 46 3.58 41.7 8.7 16.2 15.7 0.844 1.325 1.817b
Busia Maduwa 77 5.46 68.1 7.0a 3.9a 0.4a 0.772a 0.116a 0.010a
Majanji 64 1.66 27.8 2.2 1.5 0.0 0.064a 0.059a 0.000a
Hoima Kibanjwa 103 0.02 0.2 0.0 0.0 0.0 0.000 0.000 0.000
Mayuge Bukizbu 59 0.40 7.7 0.6a 0.4a 0.0a 0.114a 0.135a 0.000a
Ikulwe 46 0.04 0.5 0.0 0.0 - 0.246 0.000 -
Lwanika 61 5.96 74.5 7.4a 3.5a 44.3 0.292a 0.222a 1.648b
Moyo Aliba 39 1.38 62.2 2.1a 5.7a 2.7a 0.056a 0.244a 0.103a
Dufile 69 1.70 60.5 0.7a 4.1a 0.0a 0.008a 0.151a 0.000a
Etele 71 0.16 7.4 8.7 16.4 0.0a 2.882b 9.789b 0.000a
Laropi 68 1.40 41.6 0.0 1.1 0.0 0.000a 0.052a 0.000a
Obongi 50 0.35 34.1 1.5 0.5 0.0 0.324a 0.10002a 0.000a
Nebbi Pagwaya 54 1.66 49.8 12.0 2.7a 2.1a 0.430a 0.088a 0.087a

BL baseline, FOI force of infection expressed as the mean number of adult female parasites acquired per person per year; wppy: worms per person per year; epg: eggs per gram of faeces, FY1 follow-up year 1, FY2 follow-up year 2, FY3 follow-up year 3; ζ1, ζ2, ζ3: the relative change in the FOI at FY1, FY2, FY3, respectively, as a proportion of that at baseline; astatistically significant reduction in infection intensity or FOI from baseline; bstatistically significant increase in infection intensity or FOI from baseline

Note that the decision to allocate each sentinel site into high, medium, and low infection intensity categories was based on the infection intensity of the overall school/community at BL, rather than that of the longitudinal cohort selected to be followed up from that school/community (e.g. Kabolwa is classified in the medium category as the school-level intensity at BL was 339.4 epg; the cohort level was 452.9 epg). Any cohort with fewer than 20 individuals was excluded