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Table 1 Characteristics of the four study populations

From: Gene copy number variation in natural populations of Plasmodium falciparum in Eastern Africa

Population Kisumu Kilifi pre malaria decline Kilifi post malaria decline Sudan
Malaria transmission intensity High Medium-high Medium-low Low
Number of samples 49 33 49 52
Year of sample collection 2008 1994–1996 2010 2007
Median age in months 36 30 53.5 84
(range) (6–72) (11–37) (14–147) (12–612)
log10 median parasitaemia 5.3 4.7 5.1 5.1
(par/μl) (range) (4.9–5.8) (4.0–5.8) (2.5–6.1) (4.4–5.8)
Median hemoglobin (g/dl) 9.9 9.4 10.6 9.6
(range) (5.2–15.2) (5.3–13.2) (3.4–12.1) (3.2–12.9)
Median number of clones 2 2 2 2
(range) (1–6) (1–7) (1–5) (1–5)
Monoclonal infections (percentage) 10.2 33.3 18.4 26.9