During 2002, there was an outbreak of West Nile viral (WNV) encephalitis in Michigan with 644 human cases and 51 deaths. The number of equine confirmed WNV cases climbed to 341. Dead birds tested positive for WNV in 73 of Michigan's 83 counties. The appearance of WNV cases in Michigan resulted in local health departments expending many staff-hours responding to inquiries by concerned citizens. Additionally, there was intense interest in the issue by citizens and the news media. In response to the outbreak, many communities conducted or enhanced mosquito abatement programs.

Because of concern about WNV, some communities may begin or increase mosquito abatement programs this year. Consequently, state agencies believe that local governments that conduct mosquito abatement programs should consider a comprehensive and integrated plan that includes public education, personal protection, source reduction and appropriate intervention to prevent or reduce mosquito populations.

Please be aware that all personnel who do pesticide applications for mosquito abatement for hire must be certified or registered in mosquito pest management and the business must be licensed by the Michigan Department of Agriculture (MDA). MDA is the lead state agency responsible for regulating the use of pesticides in Michigan. Please contact your regional MDA office or visit the links below for more information about commercial business licensing or application certification requirements.

MDA Webpage on pesticide application business and certification requirements

Michigan State University Pesticide Education and Safety Program

Map of MDA regional offices with contact information

All applications of pesticides to surface waters of the state and wastewater treatment facilities must be approved by the MDEQ.

Link to Information on DEQ Approval of Mosquito Control Projects

Responding to the West Nile Virus Mosquito Vector

Any mosquito abatement efforts must involve a comprehensive approach, which includes the following:

• Education efforts to inform people about WNV

• Recommendations that the public take appropriate precautions to avoid biting mosquitoes or use repellents

• Surveying for Breeding Sites

• Source Reduction of Breeding Sites

• Larval Mosquito Control (as necessary)

• Adult Mosquito Control (as necessary)

• Assessment of data (mosquito population, dead crow surveillance, etc).

Links to Mosquito Control Agencies

Michigan Mosquito Control Association

Saginaw County Mosquito Abatement Commission

American Mosquito Control Association