The New Mexico Department of Health is reporting the first human case of West Nile virus infection in New Mexico this year. The patient is a San Juan County man in his 50s. He was diagnosed with the neuroinvasive form of the disease, which has required hospitalization, and he is now recovering. West Nile virus is a disease transmitted by mosquitoes that can sometimes be fatal. New Mexico has had cases of West Nile virus infection every year since the virus was introduced to New Mexico in 2003.