Table 1 Prevalence and intensity of soil-transmitted helminth infection (mean of duplicate Kato-Katz thick smears) in 69 school-aged Bulang children from Yunnan province, P.R. China in mid-2011, stratified by sex and age group.
Sex | Age (years) | |||||||
|---|---|---|---|---|---|---|---|---|
Male (N a = 29) | Female (N a = 40) | 8-10 (N a = 22) | 11-12 (N a = 33) | 13-15 (N a = 14) | ||||
n b (%) | n b (%) | P - value c | n b (%) | n b (%) | n b (%) | P- value | ||
T. trichiura | Overall prevalence: 81% | |||||||
Prevalence | 23 (79) | 33 (83) | 0.738 | 19 (86) | 29 (88) | 8 (57) | 0.036 | |
Infection intensity d | ||||||||
Mean EPG; SEe | 419; 582 | 350; 506 | 0.565 | 486; 643 | 374; 515 | 140; 162 | 0.194 | |
Light (1-999) | 20 (69) | 29 (73) | 16 (73) | 25 (76) | 8 (57) | |||
Moderate (1000-9999) | 3 (10) | 4 (10) | 3 (14) | 4 (12) | n.r. | |||
A. lumbricoides | Overall prevalence: 44% | |||||||
Prevalence | 9 (31) | 21 (53) | 0.076 | 13 (59) | 12 (36) | 5 (36) | 0.201 | |
Infection intensity d | ||||||||
Mean EPG; SEe | 30,719; 60,310 | 12,783; 29,677 | 0.701 | 23,557; 42,666 | 16,694; 48,090 | 7670; 11,1856 | 0.331 | |
Light (1-4999) | 6 (21) | 13 (33) | 7 (32) | 9 (27) | 3 (21) | |||
Moderate (5000-49,999) | 1 (3.5) | 7 (18) | 4 (18) | 2 (6.1) | 2 (14) | |||
Heavy (≥ 50,000) | 2 (6.9) | 1 (2.5) | 2 (9.1) | 1 (3.0) | n.r. | |||
Hookworm | Overall prevalence: 6% | |||||||
Prevalence | 3 (10) | 1 (2.5) | 0.302 | n.r. | 3 (9.1) | 1 (7.1) | 0.409 | |
Infection intensity d | ||||||||
Mean EPG; SEe | 56; 66 | 12; n.a. | 0.346 | n.r. | 56; 66 | 12; n.a. | 0.371 | |
Light (1-1999) | 3 (10) | 1 (2.5) | 3 (9.1) | 1 (7.1) | ||||
Taenia spp. | Prevalence | n.r. | 1 (2.5) | 1.000 | n.r. | 1 (3.0) | n.r. | 1.000 |