Table 2 Number (%) of schoolchildren infected with helminths and intestinal protozoa in western Tajikistan, early 2009

Helminth

   Hymenolepis nana^{a, b}

153 (25.8)

74 (24.1)

79 (27.5)

0.91

0.341

11 (17.2)

19 (32.2)

17 (28.8)

13 (21.0)

19 (38.0)

11 (20.4)

23 (34.3)

23 (33.8)

6 (10.0)

11(21.6)

   Ascaris lumbricoides^{a, b}

26 (4.4)

16 (5.2)

10 (3.5)

NA

0.323

3 (4.7)

0

1 (1.7)

0

8 (16.0)

4 (7.4)

4 (6.0)

4 (5.9)

0

2 (3.9)

   Hookworm^{a, b}

21 (3.5)

10 (3.3)

11 (3.8)

NA

0.825

0

4 (6.8)

0

0

5 (10.0)

2 (3.7)

3 (4.5)

2 (2.9)

4 (6.7)

1 (2.0)

   Enterobius vermicularis^{a, b}

15 (2.5)

4 (1.3)

11 (3.8)

NA

0.066

2 (3.1)

1 (1.7)

6 (10.2)

1 (1.6)

2 (4.0)

0

2 (3.0)

1 (1.5)

0

0

   Trichuris trichiura^{a, b}

8 (1.4)

2 (0.7)

6 (2.1)

NA

0.164

0

5 (8.5)

0

0

3 (6.0)

0

0

0

0

0

   Fasciola hepatica^{a, b}

3 (0.5)

2 (0.7)

1 (0.4)

NA

0.999

1 (1.6)

1 (1.7)

0

0

0

0

1 (1.5)

0

0

0

   Hymenolepis diminuta^a

3 (0.5)

2 (0.7)

1 (0.4)

NA

0.999

0

0

0

0

0

2 (3.7)

0

0

1 (1.7)

0

   Dicrocoelium dendriticum^a

1 (0.2)

0

1 (0.3)

NA

0.483

0

0

0

0

0

0

0

0

1 (1.7)

0

   Any helminth

190 (32.0)

91 (29.6)

99 (34.5)

1.61

0.205

15 (23.4)

21 (35.6)

22 (37.3)

13 (21.0)

27 (54.0)

14 (25.9)

29 (43.3)

26 (38.2)

11 (18.3)

12 (23.5)

   Any soil-transmitted helminth

51 (8.6)

27 (8.8)

24 (0.4)

NA

0.851

3 (4.7)

9 (15.3)

1 (1.7)

0

13 (26.0)

5 (9.3)

7 (10.5)

6 (8.8)

4 (6.7)

3 (5.9)

Intestinal protozoon

   Entamoeba coli^c

390 (65.7)

196 (63.8)

194 (67.6)

0.93

0.336

41 (64.1)

36 (61.0)

47 (79.7)

42 (67.7)

36 (72.0)

38 (70.4)

47 (70.2)

41 (62.3)

31 (51.7)

31 (60.8)

   Giardia intestinalis^a

157 (26.4)

82 (26.7)

75 (26.1)

0.03

0.873

7 (10.9)

24 (40.7)

16 (27.1)

17 (27.4)

12 (24.0)

12 (22.2)

22 (32.8)

16 (23.5)

18 (30.0)

13 (25.5)

   Entamoeba histolytica/E. dispar^a

154 (25.9)

82 (26.7)

72 (25.1)

0.20

0.652

19 (29.7)

13 (22.0)

16 (27.1)

11 (17.7)

19 (38.0)

14 (25.9)

21 (31.3)

20 (29.4)

10 (16.7)

11 (21.6)

   Blastocystis hominis^d

118 (19.9)

63 (20.5)

55 (19.2)

0.17

0.679

12 (18.8)

11 (18.6)

13 (22.0)

11 (17.7)

9 (18.0)

8 (14.8)

15 (22.4)

17 (25.0)

13 (21.7)

9 (17.7)

   Endolimax nana^c

118 (19.9)

61 (19.9)

57 (19.9)

0.00

0.998

13 (20.3)

11 (18.6)

18 (30.5)

7 (11.3)

9 (18.0)

7 (13.0)

19 (28.4)

17 (25.0)

8 (13.3)

9 (17.7)

   Iodamoeba bütschlii^c

29 (4.9)

13 (4.2)

16 (5.6)

NA

0.455

4 (6.3)

0

6 (10.1)

0

4 (8.0)

6 (11.1)

4 (6.0)

3 (4.4)

0

2 (3.9)

   Entamoeba hartmanni^c

28 (4.7)

14 (4.6)

14 (4.9)

NA

0.855

4 (6.3)

3 (5.1)

2 (3.4)

4 (6.5)

4 (8.0)

2 (3.7)

3 (4.5)

3 (4.4)

1 (1.7)

2 (3.9)

   Chilomastix mesnili^c

25 (4.2)

15 (4.9)

10 (3.5)

NA

0.677

2 (3.1)

3 (5.1)

2 (3.4)

0

0

8 (14.8)

4 (6.0)

5 (7.4)

1 (1.7)

0

   Any intestinal protozoa

497 (83.7)

255 (83.1)

242 (84.3)

0.17

0.678

53 (82.8)

53 (89.8)

54 (91.5)

50 (80.7)

44 (88.0)

46 (85.2)

60 (89.6)

56 (82.4)

42 (70.0)

39 (76.5)

   Any pathogenic intestinal protozoa

280 (47.1)

148 (48.2)

132 (46.0)

0.29

0.589

25 (39.1)

33 (55.9)

29 (58.0)

26 (41.9)

29 (58.0)

22 (40.7)

36 (53.7)

33 (48.5)

26 (43.3)

21 (41.2)

Overall infection prevalence with pathogenic intestinal parasites

375 (63.1)

195 (63.5)

180 (62.7)

0.04

0.840

34 (53.1)

42 (71.2)

40 (67.8)

35 (56.5)

38 (76.0)

29 (53.7)

48 (71.6)

46 (67.7)

34 (56.7)

29 (56.9)