Table 1 Prevalence of Plasmodium falciparum positivity, fever, and presumptive malaria (fever + parasitaemia) in the pre-transmission season cross-sectional survey and the number of active follow-up events in the Chonyi 2000 and Junju 2005–2007 Cohorts
Year | Samples (n) | Mean age in years (min–max) | P. falciparum (%) | Fever (%) | Presumptive malaria (%) | Active follow-up events (n) |
|---|---|---|---|---|---|---|
2000a | 286 | 5.62 (< 1–10) | 42.31% | – | – | 626 |
2005 | 372 | 3.9 (1–9.0) | 49.05% | 0.81% | 0.54% | 1029 |
2006 | 300 | 4.5 (1.5–9.5) | 31.21% | 0.67% | 0.33% | 615 |
2007 | 339 | 4.8 (< 1–11.0) | 15.93% | 3.24% | 1.18% | 1816 |
2008 | 341 | 5.4 (< 1–12.0) | 29.62% | 3.52% | 3.52% | 884 |
2009 | 352 | 5.8 (< 1–13.0) | 20.17% | 2.56% | 1.14% | 958 |
2010 | 377 | 6.5 (< 1–14.0) | 27.59% | 3.98% | 2.65% | 957 |
2011 | 377 | 7.1 (< 1–12.7) | 23.08% | 1.86% | 1.33% | 891 |
2012* | 399 | 7.1 (< 1–13.7) | 16.79% | 1.75% | 0.50% | 696 |
2013 | 410 | 7.5 (< 1–14.7) | 8.78% | 1.46% | 0.24% | 1483 |
2014 | 404 | 8.2 (< 1–15.7) | 14.25% | 1.49% | 0.50% | 1619 |
2015 | 400 | 8.3 (< 1–16.5) | 17.36% | 1.25% | 0.25% | 1319 |
2016 | 316 | 7.8 (< 1–15.0) | 11.61% | 1.27% | - | 1087 |
2017 | 335 | 7.1 (< 1–15.0) | 4.32% | 1.19% | - | 1050 |