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Table 1 Plasmodium falciparum, Plasmodium vivax and splenomegaly prevalences in ITN and control villages during the pre-study malaria survey (December 1997)

From: The effect of insecticide-treated bed nets on the incidence and prevalence of malaria in children in an area of unstable seasonal transmission in western Myanmar

  Intervention villages Control villages
  N M.S. Pf(%) Pv(%) Spleen (%) N M.S. Pf(%) Pv(%) Spleen (%)
Dabhine           
Pair 1 707 125 37 (30) 35 (28) 79 (63) 796 102 38 (37) 33 (32) 68 (67)
Pair 2 551 89 26 (29) 33 (37) 47 (53) 679 48 9 (19) 7 (15) 16 (34)
Pair 3 462 37 8 (22) 10 (27) 16 (42) 298 49 11 (22) 6 (12) 30 (61)
Pair 4 223 33 7 (21) 8 (24) 9 (28) 184 32 4 (13) 16 (50) 19 (59)
Pair 5 74 18 3 (17) 4 (22) 5 (28) 87 15 8 (53) 1 (7) 6 (40)
Subtotal 2017 302 81 (27) 90 (30) 156 (52) 2044 246 70 (28) 63 (26) 139 (57)
Myothugyi           
Pair 6 78 16 3 (19) 1 (6) 6 (38) 47 15 3 (20) 0 (0) 1 (7)
Pair 7 714 96 1 (1) 0 (0) 15 (16) 819 105 0 (0) 0 (0) 30 (29)
Pair 8 492 54 0 (0) 1 (2) 13 (24) 602 70 2 (3) 1 (1) 6 (9)
Pair 9 659 57 4 (7) 4 (7) 7 (12) 650 82 1 (1) 0 (0) 1 (1)
Pair 10 153 25 10 (40) 2 (8) 8 (32) 120 20 7 (35) 1 (5) 4 (20)
Subtotal 2096 248 18 (7) 8 (3) 49 (19) 2238 292 13 (4) 2 (1) 42(14)
Total 4113 550 99 (18) 98 (18) 205 (37) 4282 538 83 (15) 65 (12) 181 (34)
  1. N = number of children < 10 yrs (data from local authorities).
  2. MS = number of children of whom a malaria smear was taken.
  3. Pf = P. falciparum prevalence (including mixed infections), Pv = P. vivax prevalence (including mixed infections).