Summary of prevalence data for community and school antibody (Bm14) positives in 2 PHI areas Unawatuna (Galle district), Weligama (Matara district) in southern province.

<p>Data shown are antibody prevalence (%, 95% CI) by age and gender. Antibody prevalence in school children within these two communities are shown for 6–8 age for comparison. Antibodies to recombinant filarial antigen Bm14 were much more frequent in adults than in school age children (ages 10–17), and antibody prevalence was much higher in adult males than in females. Significance test results (*<i>P</i> values) on antibody prevalence in males are shown for each age group above the bars.</p

<i>Wuchereria bancrofti</i> DNA prevalence in <i>Culex quinquefasciatus</i> mosquitoes in survey areas.

<p><i>Wuchereria bancrofti</i> DNA prevalence in <i>Culex quinquefasciatus</i> mosquitoes in survey areas.</p

Comparison of comprehensive filariasis surveillance data for Kalutara North (KA2), Ambalangoda (GL1), Unawatuna (GL2), Weligama (M2) and Borella (C4) and Peliyagodawatta (G3) sentinel sites in Sri Lanka.

<p>Data shown are prevalence for LF parameters in community and school children and prevalence of filarial DNA in mosquitoes (% with 95% confidence intervals). Significance results with <i>P*</i> values shown for KA2, and G3 are for differences in prevalence for these LF parameters between years in the same sites.</p

Population and demographic information of community subjects enrolled in reexamination studies in selected sentinel sites.

<p>Population and demographic information of community subjects enrolled in reexamination studies in selected sentinel sites.</p

Summary of <i>Wuchereria bancrofti</i> infection parameters in Peliyagodawatta in 2008, 2011 and 2015.

<p>Summary of <i>Wuchereria bancrofti</i> infection parameters in Peliyagodawatta in 2008, 2011 and 2015.</p

The map shows 8 filariasis endemic districts with approximate locations of 19 sentinel sites that were surveyed in 2011–2013 (blue and red circles).

<p>Six areas in red circles in 5 districts were reexamined in 2015–2017 for this study. The inset map shows surveyed sentinel sites in Colombo city and in the adjacent Colombo and Gampaha districts.</p

Transmission assessment survey (TAS^a) results from 11 evaluation units (EUs) in 8 districts^b in in Sri Lanka.

a<p>The critical cutoff value for assessing interruption of transmission was 18 in all EUs.</p>b<p>The 8 endemic districts were MDA implementation units.</p>c<p>BinaxNOW Filariasis tests were used for detection of filarial antigenemia. Data shown are the number of positive tests (% positive and 95% CI).</p><p>Transmission assessment survey (TAS^{<a href="http://www.plosntds.org/article/info:doi/10.1371/journal.pntd.0003281#nt110" target="_blank">a</a>}) results from 11 evaluation units (EUs) in 8 districts^{<a href="http://www.plosntds.org/article/info:doi/10.1371/journal.pntd.0003281#nt111" target="_blank">b</a>} in in Sri Lanka.</p

Summary of filariasis parameters from community (Comm) and school surveys conducted in public health inspector (PHI) areas.

a<p>Surveyed rates for ingestion of antifilarial medications during the national mass drug administration (MDA) program 2002–06.</p>b<p>Prevalence rates are mean values (95% CI) by PHI. Results are shown as pass (regular font), borderline (<i>italics</i>) or fail (<b>bold</b>) based on provisional endpoint criteria described in the <a href="http://www.plosntds.org/article/info:doi/10.1371/journal.pntd.0003281#s1" target="_blank">Introduction</a>.</p>c<p>Study sites C3 and C4 were in the city of Colombo.</p><p>Summary of filariasis parameters from community (Comm) and school surveys conducted in public health inspector (PHI) areas.</p

Background information for Public Health Inspector (PHI) areas selected for comprehensive filariasis surveillance and demographic information for subjects enrolled in community studies conducted in these areas.

a<p>Sentinel sites (PHI) C3 and C4 were in the city of Colombo.</p>b<p>Sentinel site G3 is a Public Health Field Officer area (PHFO).</p><p>Background information for Public Health Inspector (PHI) areas selected for comprehensive filariasis surveillance and demographic information for subjects enrolled in community studies conducted in these areas.</p

Comparison of filarial infection parameters in Peliyagodawatta^a in 2008 and 2011.

a<p>Peliyagodawatta is a Public Health Field Officer area in Gampaha district.</p>b<p>Results shown are % positive (95% CI). Filarial DNA rates shown are maximum likelihood estimates (with 95% CI).</p>c<p><i>P</i> values are based on χ². NS, not significant.</p>d<p>Community microfilaremia (Mf) and circulating filarial antigenemia (CFA) rates are for ages ≥10 years. Mf rates are based on night blood smear results from all subjects in 2008 and from CFA positives only in 2011.</p><p>Comparison of filarial infection parameters in Peliyagodawatta^{<a href="http://www.plosntds.org/article/info:doi/10.1371/journal.pntd.0003281#nt116" target="_blank">a</a>} in 2008 and 2011.</p