Health officials have identified an Oakland County man as the state's first confirmed human case of West Nile Virus for 2012.  The 44-year-old man was hospitalized earlier this month after showing symptoms and is now at home recovering.  Due to an unusually warm and dry spring and summer, mosquitoes that can transmit West Nile hatched early and are on the rise in Michigan. Health officials say the months of August and September are when most human cases of the virus occur because the end of summer is when mosquitoes are older and more likely to carry the virus.  Most people bitten by an infected mosquito show no symptoms of illness.  However, some become sick three to 15 days after exposure.  Last year, West Nile Virus was responsible for 34 serious illnesses and two fatalities in Michigan.