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Table 2 Prevalence and infection intensity of soil transmitted helminths determined by the Kato-Katz procedure, qPCR and the two methods combined

From: High prevalence of soil-transmitted helminth infections in Myanmar schoolchildren

 

KK

qPCR

KK and qPCR combined

 

n

Prevalence (95% CI)

AMEPG (95% CI)

GMEPG (95% CI)

n

Prevalence (95% CI)

n

Prevalence (95% CI)

A. lumbricoides

41

15.5% (11.1–19.9)

15,322.3 (7,566.5–23,078.2)

2,059.1 (892.5–4,750.1)

145

54.9% (48.9–61.0)

156

59.1% (53.1–65.1)

T. trichiura

69

26.1% (20.8–31.5)

382.5 (207.9–557.1)

123.9 (86.4–177.9)

177

67.1% (61.3–72.8)

197

74.6% (69.3–79.9)

Ancylostoma sp.

 

N/A

N/A

N/A

78

29.6% (24.0–35.1)

 

N/A

N. americanus

 

N/A

N/A

N/A

3

1.1% (0–2.4)

 

N/A

Hookworm

0

0%

N/A

N/A

81

30.7% (25.1–36.3)

81

30.7% (25.1–36.3)

Any STH

88

33.3% (27.6–39.1)

N/A

N/A

208

78.8% (73.8–83.8)

222

84.1% (79.7–88.5)

All 3 STH

0

0%

N/A

N/A

63

23.9% (18.7–29.0)

64

24.2% (19.0–29.5)

Any 2 STH

22

8.3% (5.0–11.7)

N/A

N/A

69

26.1% (20.8–31.5)

84

31.8% (26.2–37.5)

A. lumbricoides

and T. trichiura*

22

8.3% (5.0–11.7)

N/A

N/A

118

44.7% (38.7–50.7)

134

50.8% (44.7–56.8)

A. lumbricoides

and hookworm*

0

0%

N/A

N/A

65

24.6% (19.4–29.9)

65

24.6% (19.4–29.9)

T. trichiura and

hookworm*

0

0%

N/A

N/A

75

28.4% (22.9–33.9)

77

29.2% (23.7–34.7)

  1. KK Kato-Katz method, n Number of positive cases, 95% CI 95% confidence interval, AMEPG Arithmetic mean of eggs per gram of faeces in infected children, GMEPG Geometric mean of eggs per gram of faeces in infected children, Any STH Infection with any of the three parasites (A. lumbricoides, T. trichiura, or hookworm), All 3 STH Infection with all three parasites, Any 2 STH Infection with any two of the three parasites, N/A Not applicable; *The number includes children infected with all three STH