Mosquito Abatement District Annual Report for 2013 (As required by 70 ILCS 1005 / et. seq.)

Transcription

1 Mosquito Abatement District Annual Report for 2013 (As required by 70 ILCS 1005 / et. seq.) Complete and return this form by January 6, 2014 to: Illinois Department of Public Health, Division of Environmental Health, Attn.: Linn Haramis, Ph.D., 525 West Jefferson Street, Springfield, IL 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 )_ Director@nwmadil.com 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 Daily Herald- Rainfall & nuisance Mosquitoes, West Nile virus, mosquito avoidance, NWMAD control WBBM CBS Radio (John Cody)- Rainfall & nuisance Mosquitoes, West Nile virus, mosquito avoidance, NWMAD control Northbrook Patch- Rainfall & nuisance Mosquitoes, West Nile virus, mosquito avoidance, NWMAD control Bulgarian TV Network- Nuisance and medically important mosquitoes, hot/dry weather & Culex mosquito risk of West Nile virus Pioneer Press (Park Ridge)- Culex Mosquitoes, West Nile virus, hot/dry weather, mosquito avoidance & stagnant water elimination Daily Herald- Culex Mosquitoes, West Nile virus, hot/dry weather, mosquito avoidance & stagnant water elimination Chicago Tribune- Culex Mosquitoes, West Nile Virus risk, hot/dry weather, mosquito avoidance & stagnant water elimination. 1

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3 NEWSLETTERS Mosquito Update Newsletters were faxed to twenty-four villages in the District on the following dates in 2013: 5/21, 6/13, 7/5, 7/17, 7/30, 8/23, 9/10, 9/26. Mosquito information from IDPH was also sent to these agencies. SPEAKING ENGAGEMENTS Earth Day, Northbrook, IL Irwin & Szyska, Public information: NWMAD operations, mosquito prevention, disease transmission, miscellaneous questions and discussions Ohio Mosquito Control Association, Richfield, OH, Activities of the Northwest Mosquito Abatement District and AMCA Updates- Szyska IMVCA Annual Meeting, Springfield, IL AMCA North Central Regional Director, American Mosquito Control Association update- Szyska IMVCA Annual Meeting, Springfield, IL, Northwest MAD: District Report- Szyska IMVCA Annual Meeting, Springfield, IL, Utilizing the Vector Index for Targeted Mosquito Abatement Irwin. MISCELLANEOUS: 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 356 mosquito control questions from the public regarding nuisance mosquito control, West Nile Virus, standing water sites complaints about biting adult mosquitoes and night spraying schedules. NWMAD also received 86 reports of dead birds in 2013 from the public. WEBSITE The purpose of the 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)?** If yes, list the types of traps used: If yes, for each trap type used, list the number of traps used during the season: YES ( X ) NO ( ) New Jersey Light Trap Gravid Trap CDC CO (as needed) Does the MAD test mosquito batches for the presence of West Nile virus and/or other mosquitoborne 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 3 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: CCDPH: Latrice Porter-Thomas, Peter Gianakas

4 IDPH: Linn Haramis, Curt Colwell ** 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: 2013= 1 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? 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: YES ( ) NO ( X ) Does the MAD control non-mosquito pests? If Yes, please state what non-mosquito pests are controlled: YES ( ) NO ( X ) 4

5 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. Ddd ddddddddd ddddddd d Larvicide:dddddd dlarvicide:dddddddddd Insecticide: (Liquid Spray) ( Granules or Briquets) Adulticide: Abate (Temephos) Altosid (Methoprene) Bti Bacillus sphaericus 150-Day Ingots 44,440 CB s Pellets 2,739 lbs. Vectobac granules 290 lbs. Vectolex granules 2,821 lbs. Bti/B sphaericus FourStar Briquets 90 30,000 CB s Chlorpyrifos Malathion Oils (Include Trade Name)* Permethrin Pyrethrins Sumithrin Zenivex Zenivex 201 gal. 5

6 Mosquito Beater Agnique MMF Granular Agnique MMFL Agnique MMFG 751 lbs. 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 treated times (and / or) Sites 2,552 (per 23,397 inspections) treated times Larval Control* Street Catch basins (CBs) 76,105 1 (addtl. 5,240 off-road) treated, 1-2 times Adult Control* Adulticide Acres *Comments (if any) for this section: and/or 13,712 linear road miles (Note if acres or linear road miles of spraying) 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. 1 Catch basins treated with Day briquets, 30-Day pellets. 6

7 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 2 8 As needed* * Note CDC CO 2 are 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.): Vehicle-mounted pesticide applicators or spray units: 50 Trucks, 1 SUV 2, ATV s, 1 Backhoe 1, Rodder, 2 Trailers 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 7

8 VII. Comments Floodwater Mosquito Control Efforts According to NOAA O Hare Airport, Chicago IL, 2013, Summer (June-August) temperature rankings was the 67th warmest year with a mean temperature of 71.6 degrees F. That ranking placed 2013 midway between all years as compiled by NOAA since also was 67 th in precipitation ranking since The floodwater mosquito Aedes vexans exceeded our nuisance mosquito threshold of 35 adult females (FIG. 1) on epi-weeks after cumulative springtime rainfalls saturated soils maintaining floodwaters for only a short time mid- June to early July before drying up (TABLE 1, FIG s 1-2). 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, but, was below normal due to low precipitation. Field observations in the springtime appear to indicate that soil moisture levels following the drought in 2012 may have limited early season floodwater mosquito production. Soil moisture levels in June finally produced two significant broods with adults making their presence known in July. Methoprene pellets were used for early treatments followed by MMFG for residual pupal treatment. ADULTICIDING: Below normal rainfall in July (Table 1, FIG. 2) did not produce 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 Culex spp) was performed on July 11, 17, 25; after which, mosquito numbers maintained below our threshold. MONTH WEATHER DATA FOR 2013 MEAN TEMP DEPARTURE RAINFALL DEPARTURE ( F) FROM NORM (IN.) FROM NORM April May June July August September Based on mean of daily high and low temperatures from NOAA O'Hare Airport, Chicago, Illinois. TABLE 1 8

9 May-1, June-1, July-1, Aug-1, Sept-1, Average per New Jersey Trap Year Ave vs Ave - New Jersey Trap 5 Year Ave 2013 Ave Epi Week # FIG. 1 9

10 4/1 4/15 4/29 5/13 5/27 6/10 6/24 7/8 7/22 8/5 8/19 9/2 9/16 9/30 Rainfall (Inches) NOAA, O'Hare Airport, Chicago, IL Precipitation Events Northwest Mosquito Abatement District Wheeling, IL FIG. 2 10

11 5 Year Comparison of New Jersey Light Trap Data ( ) Adult Females Mosquitoes Aedes/Ochlerotatus Count % Count % Count % Count % Count % albopictus % % % % % canadensis % % % % % cinereus % % % % % dorsalis % % % % % excrucians % % % % % fitchii % % % % % flavescens % % % % % grossbecki % % % % % japonicus* % % % % % sollicitans % % % % % sticticus % % % % % stimulans % % % % % triseriatus % % % % % trivittatus % % % % % vexans % % % % % undetermined % % % % % Anopheles punctipennis % % % % % quadrimaculatus % % % % % walkeri % % % % % undetermined % % % % % Coquillettidia perturbans % % % % % Culex erraticus % % % % % pipiens % % % % % pipiens/restuans % % % % % restuans % % % % % salinarius % % % % % tarsalis % % % % % territans % % % % % undetermined % % % % % Culiseta impatiens % % inornata % % % % % melanura % % % % % minnesotae % % % % % morsitans % % % % % undetermined % % % % % 11

12 Orthopodomyia signifera % % % % % Psorophora ciliata % % % % % columbiae % % % % % ferox % % % % % horrida % % % howardii % % % % % undetermined % % % Uranotaenia sapphirina % % % % % Undetermined spp % % % % % Totals 48, % 106, % 78, % 10, % 35, % *New species to the District. First record from RTNC gravid trap early in October TABLE SUMMARY OF INSPECTIONS OF ALL KNOWN SOURCES OF MOSQUITO PRODUCTION WITHIN THE DISTRICT * NUMBER OF CONDITION OF SOURCES NUMBER OF ROUTINELY NUMBER OF WET WET POTENTIAL INSPECTED INSPECTIONS DRY LARVAE LARVAE TOWNSHIP SOURCES SOURCES ABSENT PRESENT Barrington Elk Grove Hanover Maine ** Northfield Palatine Schaumburg Wheeling TOTAL * Totals do not reflect inspection/treatments to non-cataloged sources such as some roadside ditches, tire piles, catch basins and areas disturbed by construction. 12

13 ** Includes approximately 1 square mile of Park Ridge in the Township of Norwood TABLE 3 West Nile Virus & Culex Control Efforts West Nile virus returned for a thirteenth 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. Nine human West Nile virus cases in 2013 positions the year in a low to moderate virus risk to humans in the territory of the District based on previous year 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) and FourStar (90-Day briquets) started the end of May and concluded the end of July. A second treatment of FourStar (90-Day briquettes) began the end of July through September in District territory that had high levels of WNV infected mosquitoes. ADULTICIDING: Adulticiding was engaged after detection of repetitive WNV infected Culex mosquitoes. Crews performed focal adulticiding for WNV infected Culex mosquitoes on 8/7, 8/21, 8/26 and 8/29. 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 2013 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 September 24, Five hundred seventeen mosquito batches tested positive for West Nile virus out of two thousand, one hundred twenty two mosquito batches tested in NWMAD territory. FIG. 4 shows human infections in 2013 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). Nine human West Nile virus infections were reported in NWMAD territory in 2013 (FIG. 4). Human infections appeared to be delayed as is typical in periodic 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 13

14 May-1, June-1, July-1, Aug-1, Sept-1, Average # Per Gravid Trap biting floodwater mosquitoes. WNV amplification appeared to accelerate rapidly in August and first half of September (FIG. 4) due to dry conditions promoting stagnant Culex habitat production. 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 2013 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 Year Ave vs Ave - Gravid Trap year Ave 2013 Ave 20 0 Epi Week # FIG. 3 14

15 May-1, June-1, July-1, Aug-1, Sept-1, Vector Index human cases Vector Index, Adulticiding and human cases (lag 2 weeks) by week human cases VI Aduticiding Epi week # 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 and local village health officers/administrators. NWMAD designed the website ( 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. Avian & Miscellaneous Surveillance: NWMAD has previously utilized early dead bird surveillance as a relative indicator of potential focal areas of WNV. The greater the number of dead birds reported in an area the higher the probability of avian viral amplification and thus the increased risk of possible human WNV cases. Dead birds were reported to the District from the public and local health authorities via telephone, fax and NWMAD website form reporting. State and County health agencies tested limited numbers of dead birds for arboviruses. Ninety nine dead birds were reported to NWMAD s Dead Bird reporting website. Because of the continued lack of interest in avian surveillance the usefulness of this surveillance for early WNV activity has greatly declined. This is unfortunate since avian monitoring remains a valuable tool for WNV and other avian amplified arboviral diseases. 15

16 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. MOSQUITO ABATEMENT ACT (70 ILCS 1005/8) (from Ch /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. (Source: P.A , eff ) 16