Fig. 4From: The use of ultrasensitive quantitative-PCR to assess the impact of primaquine on asymptomatic relapse of Plasmodium vivax infections: a randomized, controlled trial in Lao PDRThe pattern of recurrent P. vivax infections in 5 study participants all in the placebo group. The x-axis shows the time of the survey in relation to the drug administration (D = Day, M = Month; Baseline of Recurrent 1, 2, and 3 = M0 of malaria elimination project; Baseline of Recurrent 4 and 5 = During cross sectional surveys of malaria elimination project either M6, M9 or M12). The y-axis shows the density (genomes/ml) on a log scale. The numbers above the columns indicate the parasite density at that point in timeBack to article page