Figure 4

Percent of mosquitoes with virus antigen in the head for each of 3 native (white bars) and 3 invasive (black bars) DENV3 isolates. Sample sizes (N), listed in or above bars, are generally lower for the body than the head because body samples were more often contaminated with fungi. The asterisk above the black bars indicated that invasive isolates infected a significantly higher proportion of heads on average than the native isolate.