Fig. 2

Growth kinetic production profiles of DENV classified by origin. The virus production profiles of different low passage dengue isolates classified by origin. The original sources of DENV included (a) four isolates from dengue fever patients (DENV 1DF, DENV 2DF, DENV 3DF, and DENV 4DF) (b) four isolates from dengue haemorrhagic fever patients (DENV 1DHF, DENV 2DHF, DENV 3DHF, and DENV 4DHF), and (c) five isolates from undifferentiated fever patients (DENV 1/1666, DENV 3/1113, DENV 4/1373, DENV 4/146, and DENV 4/163). The experiment was undertaken independently in triplicate and error bars show mean ± SD. A full statistical analysis of the data is provided in Additional file 2