Fig. 1From: Seasonal and inter-annual variation of malaria parasite detection in wild chimpanzeesTemporal variation of malaria parasite faecal detection rate in chimpanzees. Circles represent monthly detection rates (with their 95% confidence intervals); circle area is proportional to the number of samples collected that month (range 1–85). The dotted line represents the model result regarding seasonal variation in detection rateBack to article page