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Table 2 Vector infection rate by methods of analysis and study site

From: Lymphatic filariasis, infection status in Culex quinquefasciatus and Anopheles species after six rounds of mass drug administration in Masasi District, Tanzania

Analysis method

Mosquito species

No. analysed

No. infected (%)

95% CI

P-value

Microscope

Anopheles spp.

37

0

0.0–0.095

 

Culex quinquefaciatus

1822

0

0.0–0.001

 

All species

1859

0

0.0–0.001

 

PCR

Anopheles spp.

46+

0

0.0–0.077

 

Culex quinquefasciatus

365++

33 (0.5) Ç‚

0.44–0.46

0.1

All species

411

33 (0.5) Ç‚

0.45–0. 46

 

Study site

Maparagwe

280

15 (0.3) Ç‚

0.256–0.36

 
 

Mbuyuni

131

18(0.7) Ç‚

0.61–0.77

0.004*

 

All villages

411

33 (0.5) Ç‚

0.45–0. 46

 
  1. CI confidence interval
  2.  + + Pool of 20 mosquitoes; + Individual/Single mosquito; ǂ Infection rate (Pool Screen, V2.0.2; Likelihood ratio method); * Two sample test for proportion to compare mosquito infection rates between villages