 Health officials say the West Nile virus has been detected in mosquitoes in Grand Forks. While only a few mosquitoes have tested positive for the virus, locals are being asked to take precautions. Experts say wearing bug spray and long-sleeved shirts and pants and staying indoors at dusk and dawn reduces the risk of mosquito bites. The West Nile virus causes fever, headache, body aches, a rash, and in rare cases can be deadly.