Fig. 3From: Genetic diversity among Plasmodium vivax isolates along the Thai–Myanmar border of ThailandFrequency distribution of Pvcsp allelic variants from Thai P. vivax isolates collected over two periods. The number of isolates in the period of 2003–2004 (n = 173) and of 2012–2013 (n = 81) were analysed. Seventeen allelic variants were defined according to size (A to I) and repeat types (VK210 and VK247)Back to article page