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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) ǂ 0.44–0.46 0.1
All species 411 33 (0.5) ǂ 0.45–0. 46  
Study site Maparagwe 280 15 (0.3) ǂ 0.256–0.36  
  Mbuyuni 131 18(0.7) ǂ 0.61–0.77 0.004*
  All villages 411 33 (0.5) ǂ 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