Northwest Mosquito Abatement District Formed 1956 242 square miles - - PDF document

03/01/2018 1

Introduction to Northwest Mosquito Abatement District

Patrick Irwin, MS. PhD. Entomologist NWMAD 147 W. Hintz Rd. Wheeling, IL 60090 1‐847‐537‐2306 nwmadil.com

Northwest Mosquito Abatement District

• Formed 1956
• 242 square miles served

03/01/2018 2

The District by the Numbers

12 full time employees 50 summer employees

10,000 water sources and 65,000 catch basins surveyed and treated each year.

Board of Trustees

~750,000 people served by NWMAD Budget of $ 3 million annually ~ $ 3 dollars per 100,000 of property value

Mission of NWMAD

Manage mosquito populations that inhibit peoples’ ability to enjoy the outdoors and/or mosquitoes that can carry and transmit diseases to humans. Use integrated pest management (best management practices) to manage mosquito populations. These include: adult and larvae mosquito surveillance, larval abatement, adult treatment, mosquito habitat source reduction and public education.

03/01/2018 3

District Response to WNv

• Larval surveillance and

abatement in over 10,000 aquatic sites, inspections and treatment of over 65,000 storm water catch basins.

• 39 adult mosquito traps run 7

days a week throughout the district

• Vector mosquitoes tested for

WNv in lab

• Adult treatment if nuisance

mosquitoes > 35 per trap for 3 straight days or WNv detected 2 consecutive days from same trap.

Centers for Disease Control and Prevention Grant.

• 5 year collaboration between academic

institutions, public health departments and mosquito abatement districts.

• Increase surveillance and

understanding of mosquito and tick borne disease.

• Loyola University, Northshore MAD

NWMAD – Efficacy of storm water catch basin abatement.

• Michigan State, University of

Maryland, NSMAD, NWMAD – Genetic markers for subterranean mosquitoes and ability to transmit WNv.

• University of Wisconsin, University
• f Illinois, NSMAD and NWMAD –

Efficacy of larvicide and adulticide

• n mosquito biting rates.

03/01/2018 4

Questions?

NWMAD 147 W. Hintz Rd. Wheeling, IL 60090 1‐847‐537‐2306 nwmadil.com

Zika Virus

The mosquito species that spread Zika virus are not found in the Chicago area, but can occur in southern Illinois. The district does monitor for this species in case there is an introduction. 80% of people infected with Zika do not get ill. Women who are pregnant, or thinking of becoming pregnant, should consult their physician before traveling. Local transmission has occurred in southern Florida and Texas in

• 2016. Only one local transmission case in 2017 (Texas)

03/01/2018 5 District Adult Mosquito Traps

Mosquito Facts

• ~ 30 species of

mosquitoes in our district

• 2 main types of

mosquitoes – Floodwater – most common nuisance biter of humans – Disease vector – carries West Nile virus

• Only females take blood

03/01/2018 6

West Nile Virus Transmission Cycle

WNv History

• First appeared Cook County

in bird and mosquitoes 2001, 1st human case 2002

• Cook County – 1223 cases,

65 deaths

• Illinois – 2214 cases, 124

deaths

• US – 43,937 cases, 1911

deaths Most human cases appear in late July – October 5 10 15 20 25 30 35 40 45 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 Number of Human Cases Year Human Cases West Nile Virus in NWMAD

03/01/2018 7

WNv Signs, Symptoms and Treatment

~ 80 % Asymptomatic ~20 % WNv Fever

<1% CNS

No disease symptoms Flu‐like symptoms, fever and aches. Usually complete recovery Brain infection – tremors, paralysis, seizure, coma 10% of people with CNS will die People at greatest risk of serious WNv infection are those over 65, immunocompromised or

• ther serious health

conditions

What can you do to reduce mosquitoes in your yard?

• Don’t let water stand in your yard for more than 5 days

03/01/2018 8

Mosquito larvae

How can you reduce mosquito bites?

• Wear long sleeves/pants when
• utdoors
• Avoid being out at dusk and dawn
• Wear insect repellent when

mosquitoes are present – 20 % DEET, Picaridin, Oil of lemon eucalyptus

• Drought conditions are favorable for

WNv vector mosquitoes.