The West Nile Virus has spread in several countries throughout the world due to the migratory nature of a number of species of birds. Although it is a known fact that mosquitoes are primary carriers of the virus, the nature of birds to travel to other countries to escape winter season caused the spread of the virus. Birds bitten by infected mosquitoes become carriers of the virus. When they migrate to other countries and are bitten by other mosquitoes there, those mosquitoes become carriers of t…