Joints from WT-CHIKV, RH-CHIKV, RHEV-CHIKV, EV-CHIKV and mock-infected WT C57BL/6 mice were harvested at 6 dpi. (A) Absolute numbers of leukocytes present in the joints as determined by immune-phenotyping. Data are presented as the means ± SD (n=5 per group). No significance was obtained between the groups by Kruskal-Wallis test with Dunn's multiple comparisons. 