A Coleman electronic mosquito repeller works just fine. The personal ones us 1AA. Might as well have multiple lines of defense on this. I'm thinking of West Nile Encephalitus Virus, and other exotic, but much deadlier Level 4 viruses that are mosquito borne (the varieties that induce forms of Hemmoragic Fever). Might as well include Ebola here, as nobody knows what the Vector is (carrier), yet.
Ebola is the nastiest we know of (so far): 3 days to frank symptoms. 7-10 days to death. 80 percent mortality rate, and most of the survivors come at the end of the outbreak (fast mutation rate).
The coleman personals come in a 3 pack. The pack I got had one that I couldn't get the switch to function, but other other 2 work okay. The protective field is about 6 feet.
The nets also help keep out spiders, scorpions and such, as well.