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Mosquito Abatement District Annual Report for 2014
(As required by 70 ILCS 1005 / et. seq.)
Complete and return this form by January 5, 2015 to:
Illinois Department of Public Health, Division of Environmental Health, Attn.: Linn Haramis, Ph.D., 525 West Jefferson Street, Springfield, IL 62761
Name of Mosquito Abatement District (MAD): Northwest Mosquito Abatement District
Contact person: Michael Szyska, Director___________________________________________ Address: 147 West Hintz Road____________________________________________________
City: Wheeling Zip: IL Telephone: ( 847 )_537-2306__ Email: [email protected]
Legal size of abatement district in square miles: 242__________________ District boundaries or names of townships in the MAD (or attach a map): Northfield (6 sq mi), Wheeling, Palatine, Barrington, Hanover, Schaumburg, Elk Grove Village,____
Main, Norwood Park (1 sq mi)_Townships _________________________________________
___________________________________________________________________________ What was the district's budget?* 3.2 million
*Note: Public agencies (such as mosquito abatement districts) should be able to supply this information, which should be available to citizens and other government agencies. If “NA” is listed, please explain why this information is not available to other government agencies or the public.
I. Public Information & Education
A public information effort includes conducting seminars or lectures, interviews with the news media, news releases, etc.
07-16-14 Daily Herald- Rainfall & nuisance mosquitoes, West Nile virus, mosquito avoidance, NWMAD control- Michael Szyska. 07-22-14 Pioneer Press (Park Ridge) Rainfall & nuisance mosquitoes, West Nile virus, mosquito avoidance, NWMAD control- Michael Szyska.
08-20-14 Chicago Tribune- Culex mosquitoes, West Nile virus risk, hot/dry weather, mosquito avoidance & stagnant water elimination- Michael Szyska.
08-28-14 Daily Herald- Culex mosquitoes/nuisance mosquitos, West Nile virus, mosquito avoidance, NWMAD control efforts- Michael Szyska.
09-04-14 Chicago Tribune- Culex mosquitoes, West Nile Virus risk, hot/dry weather, mosquito avoidance & stagnant water elimination- Michael Szyska.
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NEWSLETTERSMosquito Update Newsletters were faxed to twenty-four villages in the District on the following dates in 2014: 5/8, 5/30, 6/14, 6/30, 7/16, 8/8, 8/27, 9/11. Mosquito information from IDPH was also sent to these agencies.
SPEAKING ENGAGEMENTS
03-11-14 Palatine, IL Kiwanis Club- West Nile Virus and You- Patrick Irwin 06-24-14 Park Ridge, IL Kiwanis Club- West Nile Virus and You- Patrick Irwin 04-26-14 Earth Day, Village of Northbrook, IL- Patrick Irwin
MISCELLANEOUS:
04-29-14 Illinois Department Public Health- West Nile virus Workshop, Willowbrook, IL- Szyska & Irwin
NWMAD provided weekly mosquito control and West Nile Virus updates to the Cook County Department of Public Health and Public information pamphlets were distributed to village halls, libraries and by public request. NWMAD responded to 531mosquito control questions from the public regarding nuisance mosquito control, West Nile Virus, standing water sites complaints about biting adult mosquitoes and night spraying schedules.
WEBSITE
The purpose of the www.nwmadil.com website was to educate the public about mosquito control operations at NWMAD including: a map of our location, overview of integrated mosquito management practices used, links to health agencies and West Nile Virus information, Mosquito Newsletter Updates, arboviral testing of mosquito pools for West Nile Virus, ULV spraying schedules, dead bird/animal reporting website form, District contact information and seasonal employee recruiting information.
II. Mosquito Vector Surveillance and Testing
Does the MAD conduct mosquito
surveillance (i.e., trapping)?**
YES ( X )
NO ( )
If yes, list the types of traps
used:
New Jersey Light Trap
Gravid Trap
CDC CO
2If yes, for each trap type used, list the
number of traps used during the season:
13
24
8 (as needed)
Does the MAD test mosquito
batches for the presence of West
Nile virus and/or other
mosquito-borne diseases?**
YES ( X )
NO ( )
If yes, list the local health
department(s) to which the
MAD reports its test data:
Cook County Department of
Public Health
Illinois Department of Public
Health
If yes, list the names of individuals at
local health department(s) to whom the
MAD reports its test data :
NWMAD lists all infected mosquitoes
on its website usually within 24 hrs at:
http://www.nwmadil.com
CCDPH: Latrice Porter-Thomas,
Peter Gianakas
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** In 2004, the Mosquito Abatement Act (see below) required MADs to conduct mosquito surveillance, to test
mosquitoes for disease, and to report these data to local health departments.
III. Water Management or Other Source-Reduction Projects
Does the MAD do water
management projects?
YES ( X )
NO ( )
If yes, type of projects:
Drainage as required
Construction consultation
If yes, estimated number of projects:
2014= 0
Other source reduction projects?
(Such as tire cleanups)
YES ( X )
NO ( )
If yes, type of projects:
Tire removal
If yes, estimated number of projects:
Annual miscellaneous fly-dumping tire
removal
IV. Biological Control Agents & Non-mosquito Pests
Does the MAD use
biological control
agents?
YES ( )
NO ( X )
If yes, list species of fish or
other agents:
If yes, list number of fish
or other agents used:
If yes, list number of
sites used in:
Does the MAD control
non-mosquito
pests?
YES ( )
NO ( X )
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V. Insecticide Use
For each insecticide, indicate type of formulation used. Where possible, specify gallons of actual insecticide
formulation used, not gallons of finished spray. Granules should be indicated by pounds of formulation.
Dddd
dddddddd
ddddddd d
Larvicide:
dddddd d
Larvicide:
dddddddddd
Insecticide:
(
Liquid Spray) ( Granules or Briquets)
Adulticide:
MetaLarv (Methoprene)
2,019.77 lbs
Altosid (Methoprene)
150-Day Ingots
47,112 CB’s
Pellets 5,115.4 lbs.
Bti
Vectobac granules
452.82 lbs.
Bacillus sphaericus
Vectolex granules
1,297.12 lbs
Bti/
B sphaericus
Chlorpyrifos
Malathion
Oils
(Include Trade Name)*
Permethrin
Pyrethrins
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Zenivex
Zenivex 296.16 gal.
Mosquito Beater
Agnique MMF Granular
Agnique MMFG
2,877.25 lbs.
Agnique MMFL
Other (Specify)
*All larvicide oils MUST be registered with US EPA.
Acres or and / or Number of Sites Treated
:
Larval Control*
Permanent Water and Floodwater Sites -
Acres
27,629.21
treated
times (and / or)
Sites
3,291 (per 28,555 inspections)
treated
times
Larval Control*
Street Catch basins
(CBs)
41,971
1(addtl. 5,141 off-road) t r e a t e d , 1 times
Adult Control*
Adulticide 78,013.93
Acres
and/or
14,859.61
linear road miles
(Note if acres or linear road miles of spraying)
*Comments (if any) for this section:
Note: number of times treated are not indicated (except for catch basins) since NWMAD utilizes different formulations and types of larvicides during any given year for labor reasons and insecticide resistance management purposes (i.e. 150-day methoprene vs. Bti (weekly treatments). Such “treatment times” information is available by request for specific sites from the NWMAD database. Acres treated are also not indicated since both permanent and floodwater sites will vary in size (sometimes significantly) primarily due to evaporation/precipitation events. Specific information on the amount of larvicides used in specific sites are available by request from the NWMAD database.
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Do you maintain a "pre-notification list" for adulticiding (check one):
( X ) YES ( ) NO
V. Equipment
(Note: If a contractor does 100% of your control operations have your contractor complete this
section.)
A. Type of Light Traps
or Other Monitoring Devices:
Type
Number Frequency of Operation
New Jersey
13
7 days/week
Gravid
23
7 days/week
CDC CO
28
As needed
*
*
Note CDC CO
2are not usually used except for monitoring in problem areas as needed.
B. Vehicles & Spray Units
(if district owned)
Number of Units
Vehicles (cars, trucks, etc.):
50 Trucks, 1 SUV
2 ATV’s, 1 Backhoe
1 Rodder, 2 Trailers
Vehicle-mounted pesticide
applicators or spray units: 35 ULV Units
C. ULV Calibration
How often are the ULV units calibrated
(droplet size, flow rate, etc)?
once per season and as needed per service
VI. Personnel
Number of full-time personnel: 12
Average number of part-time (summer) personnel: 56
VII. Comments
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According to NOAA O’Hare Airport, Chicago IL, 2014, summer (June-August) temperature rankings was the 68th warmest year with a mean temperature of 71.7 degrees F. That ranking placed 2014 midway between all years as compiled by NOAA since 1873. 2014 was 9th wettest summer since 1871.
The floodwater mosquito Aedes vexans exceeded our nuisance mosquito threshold of 35 adult females (FIG. 1) on epi-weeks 27-29 after cumulative springtime rainfalls saturated soils maintaining floodwaters for only a short time from early to mid-July before drying up (TABLE 1, FIG’s 1-2). A wetter than normal August resulted in a second peak of nuisance mosquitoes around the first of September (epi-week 36). Five-year mosquito species breakdown is provided in TABLE 2.
LARVICIDING:
Larviciding (control of the immature aquatic mosquito larvae & pupae) for floodwater mosquitoes began in May. The number of sites treated for floodwater mosquitoes increased with the arrival of a wetter than normal June. Methoprene pellets were used for early treatments followed by MMFG for residual pupal treatment.
ADULTICIDING:
Above normal rainfall in June and August (Table 1, FIG. 2) produced additional floodwater mosquitoes above our mean threshold of 35 female mosquitoes per New Jersey Light traps. Adulticiding for floodwater mosquitoes (and in part for increasing Culexspp) was performed on July 31, August 13, 19, and 27 after which, mosquito numbers fell below our threshold.
WEATHER DATA FOR 2014 MONTH
MEAN
TEMP DEPARTURE RAINFALL DEPARTURE
(°F) FROM NORM (IN.) FROM NORM
April 48.6 -0.30 2.84 -0.54 May 60.4 1.30 4.98 1.30 June 70.9 2.00 7.81 4.36 July 70.4 -3.60 2.14 -1.56 August 73.7 1.30 7.30 2.40 September 63.9 -0.70 2.71 -0.50 64.65 0.00 27.78 5.56
Based on mean of daily high and low temperatures from NOAA O'Hare Airport, Chicago, Illinois.
TABLE 1
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FIG. 1
5 Year Comparison of New Jersey Light Trap Data (2010-2014) Adult Females Mosquitoes
2010 2011 2012 2013 2014
Aedes/Ochlerotatus Count % Count % Count % Count % Count %
albopictus 0 0.00% 0 0.00% 0 0.00% 0 0.00% 0 0.00% canadensis 0 0.00% 0 0.00% 0 0.00% 0 0.00% 0 0.00% cinereus 24 0.02% 163 0.21% 8 0.71% 142 0.40% 282 0.81% dorsalis 0 0.00% 1 0.001% 0 0.00% 0 0.00% 0 0.00% excrucians 1 0.001% 0 0.00% 0 0.00% 0 0.00% 0 0.00% fitchii 16 0.02% 3 0.004% 0 0.00% 0 0.00% 0 0.00% flavescens 0 0.00% 0 0.00% 0 0.00% 0 0.00% 0 0.00% grossbecki 21 0.02% 4 0.01% 0 0.00% 3 0.01% 0 0.00% japonicus* 22 0.02% 13 0.02% 1 0.01% 10 0.03% 7 0.02% sollicitans 15 0.01% 1 0.001% 0 0.00% 0 0.00% 1 0.00% sticticus 302 0.28% 1043 1.33% 0 0.00% 0 0.00% 1 0.00% stimulans 61 0.06% 51 0.06% 3 0.01% 29 0.08% 29 0.08% triseriatus 25 0.02% 23 0.03% 1 0.01% 7 0.02% 237 0.68% trivittatus 3985 3.74% 2534 3.22% 0 0.00% 1584 4.44% 1118 3.20% vexans 91393 85.85% 65229 83.01% 696 61.43% 27021 75.67% 28554 81.83% undetermined 383 0.36% 709 0.90% 0 0.00% 0 0.00% 0 0.00% Anopheles punctipennis 220 0.21% 175 0.22% 0 0.00% 95 0.27% 498 1.43% quadrimaculatus 1359 1.28% 1346 1.71% 33 2.91% 1221 3.42% 173 0.50% walkeri 22 0.02% 32 0.04% 0 0.00% 0 0.00% 5 0.01% undetermined 3 0.003% 13 0.02% 0 0.000% 0 0.00%
0.00% Coquillettidia perturbans 2018 1.90% 1533 1.95% 72 6.35% 74 0.21% 65 0.19% Culex erraticus 176 0.17% 166 0.21% 2 0.18% 205 0.57% 301 0.86% pipiens 246 0.23% 151 0.19% 0 0.00% 0 0.00% 0 0.00% pipiens/restuans 2584 2.43% 2630 3.35% 286 25.24% 5011 14.03% 3182 9.12% 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 19 20 21 22, June 1 23 24 25 26 27, July 1 28 29 30 31, Aug 1 32 33 34 35 36, Sept 1 37 A ve # M o sq u ito e s Epi Week #
NWMAD NJ TRAP 5 YEAR AVE VS. 2014
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restuans 1876 1.76% 1621 2.06% 0 0.00% 0 0.00% 0 0.00% salinarius 60 0.06% 119 0.15% 0 0.00% 0 0.00% 0 0.00% tarsalis 23 0.02% 1 0.00% 0 0.00% 0 0.00% 0 0.00% territans 450 0.42% 207 0.26% 14 1.24% 0 0.00% 6 0.02% undetermined 128 0.12% 164 0.21% 0 0.00% 0 0.00%0.00% Culiseta impatiens 1 0.001% 0 0.00 0 0.00% 0 0.00% inornata 85 0.08% 187 0.24% 11 1.01% 63 0.18% 31 0.09% melanura 0 0.00% 1 0.00% 0 0.00% 0 0.00% 0 0.00% minnesotae 24 0.02% 19 0.02% 0 0.00% 0 0.00% 0 0.00% morsitans 0 0.00% 0 0.00% 0 0.00% 2 0.01% 0 0.00% undetermined 5 0.005% 5 0.01% 0 0.000% 0 0.00%
0.00% Orthopodomyia signifera 9 0.01% 2 0.003% 0 0.00% 2 0.01% 1 0.00% Psorophora ciliata 0 0.00% 36 0.05% 0 0.00% 23 0.06% 3 0.01% columbiae 0 0.00% 0 0.00% 0 0.00% 0 0.00% 0 0.00% ferox 5 0.005% 17 0.02% 0 0.000% 40 0.11% 0 0.00% horrida 1 0.001% 0 0.00% 0 0.00% 16 0.05% howardii 0 0.00% 0 0.00% 0 0.00% 0 0.00% 0 0.00% undetermined 7 0.01% 0 0.00% 0 0.00% 0 0.00% Uranotaenia 0.00% sapphirina 869 0.82% 354 0.45% 5 0.44% 179 0.50% 384 1.10% Undetermined spp. 50 0.05% 20 0.03% 0 0.00% 0 0.00% 0 0.00% Totals 106,457 100.00% 78,583 100.00% 1,132 100.00% 35,711 100.00% 34,894 100.00%
* New species to the District. First record from RTNC gravid trap early in October 2007.
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FIG. 2
2014 SUMMARY OF INSPECTIONS OF ALL KNOWN WATER SOURCES OF MOSQUITO PRODUCTION WITHIN THE DISTRICT *
CONDITION OF SOURCES
NUMBER OF NUMBER OF WET WET
INSPECTED INSPECTIONS DRY LARVAE LARVAE
TOWNSHIP SOURCES ABSENT PRESENT
Barrington 1652 4785 1564 2408 813 Elk Grove 1171 5132 2654 2016 462 Hanover 1156 3337 1483 1344 510 Maine 622 3402 1683 1333 386 Northfield 261 901 474 338 89 Palatine 1812 5387 2348 2526 513 Schaumburg 1096 5112 2215 2264 633
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Table 3.
West Nile Virus &
Culex
Control Efforts
West Nile virus returned for the fourteenth consecutive season in the Northwest Mosquito Abatement District. As in previous years, WNV activity was predominant in the urbanized eastern portion of NWMAD. Higher incidences of WNV infected mosquitoes continue to occur in the vicinity of the Des Plaines River around the older more urbanized areas with extensive storm water drainage holding containments and underground storm and combined storm-sewer systems that provide abundant Culex spp production water sources. Three human West Nile virus cases in 2014 positions the year in a low virus risk to humans in the territory of the District based on previous years human case numbers.
LARVICIDING:
Control efforts for Culex mosquitoes began in the spring with methoprene pellet treatments of typical early season stagnant water and container areas. Catch basin treatment (including street, easement, backyard and miscellaneous basins) with methoprene (150-Day Altosid Ingots) started the last week of May.
ADULTICIDING:
Adulticiding was engaged after detection of repetitive WNV infected Culex mosquitoes. Crews performed focal adulticiding for WNV infected Culex mosquitoes on 8/13, 8/19, and 8/27. Efforts were primarily focused on the eastern half of the District where prevalent WNV infected Culex mosquito batches were collected and tested via RAMP & confirmed by RT-PCR (via Medical Entomology Program, Illinois Natural History Survey, Prairie Research Institute). The District continues to focus its early control efforts to minimize the avian epizootic or bird viral amplification cycle. The intent of this approach is to reduce the build-up of virus and subsequently lessen the probability or intensity of human infections. Integrated control practices would then be maintained until virus is no longer observed in mosquitoes and/or via dead birds and/or cessation of mosquito activity due to cooler temperatures. Integrated mosquito control practices consist of larviciding (control of immature aquatic mosquito larvae & pupae), adulticiding (ultra low volume spraying for biting adult mosquitoes), source reduction (i.e. drainage, water management, tire removal, etc.) and public education regarding mosquito avoidance and control for residents of the District.
Mosquito & Arboviral Surveillance:
In 2014 NWMAD used 23 CDC gravid traps (FIG. 3) to monitor medically important Culex mosquitoes. Arboviral detection at NWMAD is done in-house for West Nile Virus using the RAMP testing. The RAMP is an in-house Immunological Test that provides immediate virus detection so that a quick & targeted control response is possible. All in-house tested mosquito batches are sent to the Illinois Natural History Survey, Prairie Research Institute for TaqMan RT-PCR confirmation. Gravid traps are preferable because they collect primarily egg-laying, previously blood-fed (possibly arbovirus infected), Culex mosquitoes. Such mosquito traps require less labor for mosquito sorting/identifying allowing us to maximize our trap numbers and detection sensitivity. Culex mosquitoes are the predominant flavivirus-infected mosquito vectors encountered in our District and serve as the best early warning prior to human infections. NWMAD began testing mosquitoes for virus using RAMP May through October 1, 2014. 169 mosquito batches tested positive for West Nile virus out of 1872 mosquito batches tested in NWMAD territory.
FIG. 4 shows human infections in 2014 and Culex mosquito infection rates via Vector Index. The Vector Index is the average number of mosquitoes collected per a trap night multiplied by the proportion of mosquitoes infected with West Nile virus. It is expressed as the average number of infected mosquitoes during the sampling period (epi-week). Three human West Nile virus infections were reported in NWMAD territory in 2014 (FIG. 4). Human infections appeared to be delayed as is typical in periods above normal rainfall years during May & June (Table 1 & FIG 2) promoting larval/pupal habitat flush-outs helping to reduce Culex population numbers. Additionally, the later than normal nuisance mosquito peak in July (FIG. 1) may have also helped encourage mosquito avoidance in the public possibly compounding the apparent delay of virus activity in humans due to the presence of these aggressive
Wheeling 1108 3273 1893 1065 315
TOTAL 8878 31329 14314 13294 3721
* Totals do not reflect inspection/treatments to non-cataloged sources such as some roadside ditches, tire piles, catch basins and areas disturbed by construction.
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biting floodwater mosquitoes. WNV amplification appeared to accelerate rapidly in August and first half of September (FIG. 4). According to our research human cases will generally start to appear when the Vector Index reaches about 0.2 or above.
As in prior WNV years the District performed Culex mosquito control activities using integrated mosquito management including larviciding (spraying for mosquito larvae and pupae) and adulticiding (spraying for biting adult mosquitoes). Larviciding began in mid-May through September and adulticiding activities began when WNV infected mosquitoes were detected in July. Adulticiding was initiated in 2014 after nuisance mosquitoes peaked in July, and subsequently, when West Nile virus started to amplify in the Culex mosquito population (FIG. 4). Adulticiding was discontinued by mid-September when cooler temperatures and windy conditions prevented this operation.
FIG. 3
0 10 20 30 40 50 60 70 80 90NWMAD GRAVID TRAP 5 YEAR AVE VS. 2014
5 year Ave 2014 Ave
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FIG. 4
Public Relations Efforts:
NWMAD continues to provide, current, regularly updated information on WNV and mosquito control to the residents of the District. Educating the public with regards to mosquito control/avoidance is one of the best weapons against West Nile virus and greatly assists our control efforts. NWMAD has promoted public relations efforts with timely released Mosquito Update Newsletters distributed throughout the District providing information on our past, present and future mosquito control/surveillance efforts, arboviral
surveillance by the Illinois Department of Public Health & Cook County Department of Public Health, in-house virus detection efforts (RAMP, VecTest) and RT-PCR via the Illinois Natural History Survey, DNR , current arboviral and mosquito control news and resident/homeowner mosquito control/avoidance practices. NWMAD also continues to provide timely newspaper, radio and television coverage of mosquito control issues as they develop during the season. Our entomology staff provides ongoing mosquito control education to the public, health fairs local village health officers/administrators and conducting seminars for local community service organizations.
NWMAD designed the website (www.nwmadil.com) to further our educational efforts. The purpose of this website was to educate the public about mosquito control operations at NWMAD including: a map of our District, overview of our integrated mosquito management practices used, links to health agencies and West Nile Virus information, Mosquito Newsletter Updates, arboviral testing of mosquitoes for West Nile Virus and Saint Louis & Eastern Equine encephalitis, ULV spraying schedules, dead bird/animal
reporting website form, District contact information and seasonal employee recruiting information. The District website is very effective at relaying current and local mosquito control/surveillance and arbovirus information to the public and the news media.
Mosquito Control Research Efforts
:
The primary focus of our research is to continue our evaluation of Culex mosquitoes in catch basins throughout our District and better define the biotic and abiotic variables that are most conducive to mosquito production in these abundant storm water systems. Better knowledge of these systems may improve our current treatment efficacy and/or possible identify better strategies of control for these disease transmitting mosquitoes. Another research project is a cluster analysis of human cases in our district. Systematically plotting the human cases and conducting geostatistical analysis may allow us to identify which parts of our district are hotspots for WNv transmission. 0 0.2 0.4 0.6 0.8 1 1.2 0 0.05 0.1 0.15 0.2 0.25 0.3 18, May 1 19 20 21 22, June 1 23 24 25 26 27, July 1 28 29 30 31, Aug 1 32 33 34 35 36, Sept 1 37 38 39 H u m an ca se s Ve cto r In d ex Week #
Vector Index, adulticiding and human cases 2014
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MOSQUITO ABATEMENT ACT (70 ILCS 1005/8) (from Ch. 111 1/2, par. 81): Sec. 8. The board of trustees of any mosquito abatement
district shall, in its work, advise and cooperate with the Department of Public Health of the State, and the board of trustees of such district shall submit to such Department, on or before January 1st of each year, a report of the work done and results obtained by the district during the preceding year.
The board of trustees of any mosquito abatement district, or its designee, shall conduct routine surveillance of
mosquitoes to detect the presence of mosquito‑borne diseases of public health significance. The surveillance shall be
conducted in accordance with mosquito abatement and control guidelines as set forth by the U.S. Centers for Disease
Control and Prevention. Areas reporting disease in humans shall be included in the surveillance activities. Mosquito abatement districts shall report to the local certified public health department the results of any positive mosquito samples infected with any arboviral infections, including, but not limited to: West Nile Virus, St. Louis Encephalitis, and Eastern Equine Encephalitis. Reports shall be made to the local certified public health department's director of
environmental health, or a designee of the department, within 24 hours after receiving a positive report. The report shall include the type of infection, the number of mosquitoes collected in the trapping device, the type of trapping device used, and the type of laboratory testing used to confirm the infection. Any trustee of a mosquito abatement district, or designee of the board of trustees of a mosquito abatement district, that fails to comply with the requirements of this Act is guilty of a Class A Misdemeanor.
