Definitely. I started researching them just because I noticed how much more aggressive they are than the mosquitoes we had when I was younger (including hunting during the day). Most of the literature I found talks about them as possible disease vectors. So far nothing has been connected to them (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2627635/pdf/928...), but it's definitely a cause for concern.