Things you can do to prevent disease include:
Wear repellent - Look for one that contains DEET, Picaridin, IR 3535, or Oil of Lemon Eucalyptus. These are the ONLY active ingredients recommended by the Centers for Disease Control. If you are outside for prolonged periods, choose a product with a higher amount of active ingredient. Minimize outdoor activity during peak biting hours (early morning and evening).
Remove or modify all objects holding water - Empty and store buckets, toys, tarps, and garden equipment. Drill holes in yard debris containers so they don't collect water.
Treat Water you Can't Drain - Use Bti Mosquito Dunks in birdbaths, rain barrels, and flooded areas that cannot be drained. These are available at local home improvement stores and hardware stores. This is a naturally occuring bacterium that kills only mosquito larvae and is non-toxic to fish, pets, birds, and children.