Grand Forks Countyhas its first two human cases of West Nile virus. The Grand Forks Health Department is urging residents to take precautions to avoid being bitten by mosquitoes. August and early September are prime months for W-N-V because of the presence of the Culex Tarsalis skeeter – the most common for transmitting the mosquito-borne illness. At last report 19 human cases have been identified in North Dakota. In addition 19 counties are reporting some form of W-N-V activity.