Table 3 Circulating filarial antigen (CFA) and microfilaraemia prevalence rates within 6–7 year-old children and those of 8 years and above from 2009 to 2013

Sample size and target

Targeted sample size

1,107

1,107

2,530

372

Total population

4,431

4,761

5,044

5,225

Number tested (n)

1,089

1,096

2,097

359

ICT

≥ 8 years % Positive (n/N)

4.9% (39/800)

3.5% (28/795)

2.8% (50/1,812)

[95% CI]

[3.53–6.67]

[2.40–5.12]

[2.08–3.65]

–

6–7 years % Positive (n/N)

0% (0/289)

2.7% (8/301)

3.9% (11/285)

4.5% (14/309)

[95% CI]

[0.00–1.64]

[1.24–5.37]

[2.04–7.00]

[2.60–7.66]

Mf

≥ 8 years % Positive (n/N)^b

2.6% (1/39)

10.7% (3/28)

0% (0/50)

[95% CI]

[0.06–13.48]

[2.81–29.37]

[0.00–8.89]

–

6–7 years % Positive (n/N)^b

0

0% (0/8)

0% (0/11)

0% (0/14)

[95% CI]

[0.00–40.23]

[0.00–32.15]

[0.00–26.76]

PCR

≥ 8 years % Positive (n/N)

5.13% (2/39)

np

np

np

[95% CI]

[0.89–18.63]

6–7 years % Positive (n/N)

0

np

np

np

[95% CI]

Wb123

≥ 8 years % Positive (n/N)

np

np

4.7% (2/43)

nd

[95% CI]

[0.81–17.06]

6–7 years % Positive (n/N)

np

np

1.8% (5/285)

nd

[95% CI]

[0.65–4.27]

Og4C3

≥ 8 years ICT % Positive (n/N)

np

np

4% (2/50)

np

[95% CI]

[0.70–14.86]

6–7 years % Positive (n/N)

np

np

1.8% (5/285)

np

[95% CI]

[0.65–4.27]