Mosquitoes in Bernalillo and Sandoval counties have tested positive for the West Nile Virus.
Paul Ettestad of the state Department of Public Health says recent rain across New Mexico has created breeding sites for mosquitoes.
Officials are urging the public to use bug repellent when outdoors, especially during the evening and early morning hours when mosquitoes are most active. The city of Albuquerque operates a mosquito control program that also covers Bernalillo County.
Common symptoms of West Nile Virus include fever, nausea, headache and muscle aches.
New Mexico had four human cases of infection last year. Health officials say most cases are reported in August and September.