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Table 2 Age-specific asexual Plasmodium spp. prevalence rates and densities.

From: Age-structured gametocyte allocation links immunity to epidemiology in malaria parasites

Study Site age group Trophozoite prevalence (%) N Mean trophozoite density (± CI95%)
Cameroon 0–5 66.4 42 3965
(2613–5317)
Rural 6–9 71 119 1726
(1199–2253)
  10–15 69.5 104 1387
(879–1895)
  15+ 39.5 148 829
(500–1158)
Cameroon 5–10 NA 14 7600
(2720–12480)
Urban 11–14   25 8471
(4616–12326)
  15–20   20 9721
(5103–14339)
  21–25   19 5842
(2169–9515)
  25+   17 5934
(2020–9848)
Kenya 1–4 89 63 1603
(968–2654)
  5–9 94 83 654
(444–963)
  10–14 90 88 188
(134–264)
   Trophozoite Incidence (%)   
Sri Lanka     
P. vivax 0–5 10 753 NA
  6–15 13.8 829  
  16–25 9.4 712  
  26–50 6.5 1080  
  50+ 3.9 251  
P. falciparum 0–5 7.4 753  
  6–15 20.1 829  
  16–25 17.4 712  
  26–50 12.8 1080  
  50+ 7.6 251  
  1. N is the number of individuals contributing to the calculation of mean trophozoite densities or, for the case of Sri Lanka, the incidence rates. NA is Not Available.