Summer brings sunshine, the outdoors – and mosquitos! Unfortunately, mosquitos carrying the West Nile Virus apparently set off a seasonal epidemic in North America from summer to fall. A map of West Nile Virus activity reported in 2012 shows that the incidence of the disease is spreading throughout the United States. There were concentrations of cases in New England, the Midwest and around the Great Lakes, throughout California, and in the South from East Texas and nearby states. An CDC fact sheet on the symptoms, prevention, and treatment of West Nile Virus is available.