Fig. 1.

Annual patterns of prevalences (a) and parasitaemia (number of copies/μl of blood; b) for the two studied Plasmodium species. Means and standard errors of the mean calculated from raw values are represented. For parasitaemia, outliers were excluded from mean calculations to allow visible inter-annual comparisons. We excluded four values for P. mandrilli (30,929, 134,387, 273,424, 1,267,280 copies) and four values for P. gonderi (78,322, 100,182, 767,718, 2,551,395 copies), all these elevated parasitaemia were measured in 2015, except one value measured in 2014 for P. mandrilli.