Just get a repellant that has at least 20% Deet in it and you will be fine. If you are anchoring
out I doubt mosquitoes will be a problem as we have never seen one on our boat at anchor
in 2 months but when we were at the dock
for a couple of days we really had to be careful with our screens as there were lots of them. The one that carries the virus is a daytime one so if you are out hiking then use the repellent and you should not have any problems.