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Metro Public Health Department of Nashville/Davidson County |
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MINUTES
The meeting of the Board of Health was called to order by Chair Bill Hance at 4:00 p.m. in the auditorium of the Lentz Public Health Center.
Present
Bill
Hance, J.D., Chair Mosquito Control Plan Presentation
Dr. Samni Areola, Toxicologist, stated that the proposed Mosquito Control Policy was presented at the February 12, 2008 Board of Health meeting (Attachment I). During the March 11, 2008 Board meeting, Dr. Bill Paul, Director of Health, gave an update regarding the process for approving the plan. A public hearing was held to receive public comments. Part of the final approval process was the receipt of approximately 70 public comments. Dr. Areola stated that consultation with staff, Board members, and the public has resulted in an improved policy.
Dr. Areola asked for the Board’s approval of the Mosquito Control Policy.
Ms. Behm stated that as she understands it, the proposed policy is that Metro Public Health will not spray unless there is a documented threat to public health. Dr. Areola confirmed that is the Health Department’s policy.
Rachel Sumner of the No Spray Coalition, voiced her objection to the Board’s approval of the policy.
Dr. Stewart made a motion to approve the Mosquito Control Policy. Ms. Parmley seconded the motion. The motion unanimously passed.
Staff Recommendations Regarding SysTech
Fred Huggins, Director of Vehicle Inspection, stated that at the March 11, 2008 Board of Health meeting, the Board asked for recommendations regarding SysTech and the remaining items that were to be completed. Metro Legal has sent a letter to Lothar Geilen of SysTech, indicating Board’s dissatisfaction with SysTech’s lack of performance and offering potential courses of action.
Mr. Huggins recommended that SysTech be granted the time requested (July 1, 2008) to complete the remaining items. If SysTech fails to meet their schedule the Health Department and Metro Legal will work to bring SysTech into compliance and impose penalties.
Ms. Behm made a motion to approve the recommendation. Dr. Foster seconded the motion. The motion unanimously passed.
Approval of Grants and Contracts
Margaret Holleman, Director of Policy Development and Analysis, referred to the Grants/Contracts Summary which was submitted to Board members for their review. The contracts and grants were as follows:
Ms. Behm made a motion to approve the Grants/Contracts. Ms. Parmley seconded the motion. The motion unanimously passed.
Report of Chair
Mr. Hance called the Board’s attention to the Downtown Clinic for the Homeless report.
Ms. Behm stated that the report contained a comment regarding missing charts. She asked for an update on this issue. Bart Perkey stated he would check into this and would include an update in May’s report.
Approval of March 11, 2008 Minutes
Dr. Foster made a motion to approve the March 11, 2008 minutes as written. Dr. Stewart seconded the motion. The motion unanimously passed.
Report of Director
Copies of the Director’s report were distributed to Board members. Dr. Paul gave a summary of this report (Attachment II).
Civil Service Board
Addition of Professional Specialist Position to Health Department Pay Plan
Leslie Robeson, Human Resources Director, presented the job description for Professional Specialist and requested that the Board approve adding the position to the Health Department pay plan.
Ms. Behm made a motion to approve the addition of Professional Specialist to the Health Department pay plan. Dr. Stewart seconded the motion. The motion unanimously passed.
Personnel Changes and Exit Interviews
The personnel changes and exit interviews were unremarkable.
Lay-Off Policy
Stan Romine, Director of Finance and Administration, reviewed the Lay-Off Policy. Copies of the policy were distributed to members of the Board. Mr. Romine asked for the Board’s approval of this policy.
Ms. Behm made a motion to approve the Lay-Off Policy. Dr. Foster seconded the motion. The motion unanimously passed.
Next Meeting
The next meeting of the Board of Health will be held at 4:00 p.m. on Tuesday, May 13, 2008, in room 212 of the Lentz Public Health Center.
The meeting adjourned at 5:05 p.m.
Respectfully submitted,
William N. Hance, J.D. Chair
Mosquito Control Program Plan Metropolitan Public Health Department Nashville/Davidson County
Pest Management Services (PMS) of the Metro Public Health Department (MPHD) in Nashville, Tennessee is the program charged with the responsibility of designing and implementing relevant aspects of Integrated Pest Management (IPM) program to reduce risks of mosquito-borne diseases in Davidson County. MPHD’s mosquito management program follows basic principles of Integrated Pest Management (IPM) and is consistent with the Center for Disease Control and Prevention (CDC) guidelines for surveillance, prevention, and control of WN virus.
The overarching goal of the mosquito management program is to reduce risk of mosquito-borne disease transmission to humans.
Currently, West Nile virus (WNV) is the mosquito-borne disease of primary concern. Since WNV was first reported in the US in 1999, it has caused more than 24,400 cases of illness and more than 1,000 deaths in the entire country. In 2003, 9,862 human cases including 264 deaths were recorded. The numbers for 2006 were 4,269 cases and 177 deaths. In 2007, 3510 cases and 109 deaths were reported nationally in 2007. West Nile virus was first reported in Tennessee in 2001.
While Davidson County does have a significant burden of nuisance mosquitoes, the area has not experienced significant outbreaks of WNV disease. Only 4 cases of human WNV infection have been reported since 2002, representing an average incidence of 1.1 per million persons per year. The county has never experienced epidemic transmission of West Nile virus, St. Louis encephalitis, or disease from another arbovirus.
The MPHD IPM program is designed only to control mosquito-borne diseases, not to reduce “nuisance mosquitoes.” Individual properties will not be treated or sprayed based on complaints about mosquito nuisance. The number of complaints, requests, or perceived “mosquito problems” are not used as a trigger for adult mosquito control. However, service requests and complaints are recorded and mosquito surveillance may be targeted to those areas with high number of complaints in order to determine which species of mosquitoes are causing the nuisance and inform public recommendations for managing the nuisance while minimizing pesticide use.
The primary goal of IPM is to design and implement a comprehensive approach to pest management that is effective in protecting public health, and also practical and cost-effective. As recommended by CDC and practiced widely in urban areas in North America, the approach includes public education, source identification and reduction activities (elimination of standing water that can serve as breeding sites for Culex mosquitoes), surveillance to track mosquito populations and presence of virus, larviciding, and adulticiding (spraying).
This document describes each component of the comprehensive mosquito management program.
Public Education
Public education is a critical component of MPHD’s mosquito management program. MPHD works with other Metro agencies, neighborhood organizations, various media, the State of Tennessee Department of Health, and citizens to heighten awareness and to educate and involve the public in elimination of breeding sites and avoidance of mosquito bites.
The mosquito season in Nashville begins with the highly publicized Backyard Inspection Day (BID). During Backyard Inspection Day, a section of the city is selected for inspection for breeding sites and provision of educational materials to citizens. A public relations/education campaign is used to sensitize the entire community to the beginning of the mosquito season and to remind individuals of the role each person plays in eliminating and reducing mosquito breeding sites. During the Backyard Inspection Day, flyers and other information are handed out to the community. Phone calls about the event are made to homes located within the area and a phone line is dedicated for residents’ information and registration to have their yards inspected. Individual homes are inspected for breeding sites during the event.
Information on elimination of mosquito breeding sites, significance of specific surveillance findings, and safe methods to avoid mosquito bites are publicized via broadcast media throughout the season, and links to authoritative information on prevention is provided on the MPHD web site.
The public can access more information by visiting the website http://healthweb.nashville.gov) or by calling 340-5668.
Environmental Surveillance & Source Reduction
Earlier MPHD source reduction efforts included an interagency initiative to reduce stagnant water in stormwater treatment devices such as retention/detention ponds and catch basins. The mosquito task force that supported this initiative included experts from Metro Water Services, Metro Public Works, MPHD, representatives from community organizations and Tennessee Department of Health.
MPHD was also part of the Stormwater regulations review committee in 2004 that instituted better design requirements for stormwater treatment devices and policy changes to improve the maintenance of the over 5,000 such facilities in Davidson County.
Through this process and working with Stormwater Division of Metro Water, we identified many breeding sites in the city.
PMS environmental health staff will conduct year round, county-wide environmental scans to identify possible breeding sites, monitor sites for stagnant water, determine factors underlying identified stagnancy (such as illegal dumping, overgrown vegetation, improperly maintained storm drains, clogged ditches) and explore ways to mitigate the problem by working with appropriate authorities or individuals.
Environmental surveys for mosquito breeding sites will begin by March of each year. For ease of reference, habitat maps may be created containing results of the environmental survey.
Larval Surveillance
The goal of larval surveillance in Davidson County is to identify areas of high mosquito breeding activity for larvicide applications.
Larviciding
When standing water that breeds mosquitoes cannot be eliminated it can be treated with larvicides to prevent the emergence of vector mosquitoes. Along with public education and source identification and reduction, larviciding represents a preferred method of mosquito management at MPHD. Following environmental inspections of breeding sites, larvicides are applied as needed based on larval presence as determined through dipping. Only sites with significant numbers of mosquito larvae present will have larvicide applied.
Both chemical based and biological larvicides are used to control mosquitoes at this developmental stage. Environmentalists at MPHD treat over 700 sites every year. We currently use Bacillus thuringiensis israelensis (Vectolex CG), methoprene (Altosid XR) and Aliphatic Petroleum Hydrocarbons (GB-1111) to control larval population. Vectolex CG is very effective in controlling Culex larvae. The specific type of larvicide applied in an area and the dosage rate depend on the stage of larval development, larval population density, level of vegetation cover, and extent of suspended particles in the body of water. For example, GB-1111 will be more effective for later stage larval instars.
Adult Mosquito Surveillance
The goals of the adult mosquito surveillance for Metro Public Health Department are:
Approach
Bird Surveillance
Bird surveillance will include keeping records of the number of reported dead birds and testing of selected birds for WN virus. Along with mosquito and larval surveillance data, bird mortality associated with WN virus infection will be used to provide additional information about local WN virus transmission in an area.
Bird surveillance will begin in late April to early May and will coincide with the initiation of adult mosquito surveillance. Citizens are encouraged to report sightings of dead birds.
Crows, Blue Jays and Robins that are in good condition (without obvious decomposition and picked up within 24 hours of death) will be accepted for laboratory testing.
Adulticiding
MPHD recognizes that infected adult mosquitoes can transmit diseases of public health importance. The preferred mosquito control strategies of the Department involve the use of non-chemical mosquito control methods including public education, breeding site reduction and application of larvicides as previously described. However, despite intensive efforts to eliminate breeding sites and apply larvicides, there may be times when a significant and increasing number of infectious adult mosquitoes are present in an area. If this situation is present, the risk to humans is high. Public communication about risk and avoidance of mosquito bites is essential, but at that stage adult mosquito control is the only way to reduce the number of infected adult mosquitoes. Thus, while it is considered a “last resort”, using adulticide to quickly reduce the population of infected adult mosquitoes may be necessary on some occasions and is an accepted and recommended way to reduce risk of disease.
When predetermined action thresholds (discussed below) are met or exceeded, adulticide application may be implemented to reduce risks of WN virus transmission by decreasing the density of infected adult mosquitoes.
Metropolitan Code of Laws (MCL) §10.32.180 governs public communication and opt-out provisions for mosquito spraying activities. Provision D of the ordinance states: “The department of health shall be relieved from any of the foregoing requirements of this section if the director of health determines that a documented threat to public health exists.”
The revised policy of MPHD shall be to spray for adult mosquitoes ONLY when a documented threat to public health exists. Adulticide application will be considered at the level of CDC risk category 3 (moderate probability of human outbreak). In prior years, the threshold for spraying was in CDC risk category 2 (low probability of human outbreak). Based on prior documented risk, the department expects conditions described as thresholds for spraying to be rarely if ever met, and for spraying to be a rare event.
Because MPHD will spray for adult mosquitoes ONLY when a documented threat to public health exists, MPHD is exempt from the application of MCL § 10.32.180. However, MPHD’s policy will be to comply with the public notification expectations of MCL § 10.32.180.
If spraying occurs, MPHD will utilize ultra low volume (ULV) application of insecticides from equipment mounted on trucks for adult mosquito abatement once predetermined action thresholds are met or exceeded. The department currently applies sumithrin/piperonyl butoxide (Anvil 2+2) to control adult mosquitoes. This compound is registered by the Environmental Protection Agency for use in residential and recreational areas.
All application of pesticides will be conducted in compliance with applicable federal and state regulations.
The department will broadcast spray an area from the street. In rare occurrences, spray may be conducted from alleys or trucks might enter larger properties when the size of the property calls for such action.
Indicators of WN virus activity will include identification of pools of mosquitoes positive for WN virus, positive birds or human cases.
Finding two or more positive pools of mosquitoes in the same area, collected 2-14 days apart will be considered evidence of focal amplification and sustained viral activity. This will be the primary action threshold considered in making a determination to apply adulticides.
The action threshold for application of Anvil by MPHD corresponds to recommendations at risk category 3 (moderate probability of human outbreak) by the Centers for Disease Control and Prevention’s (CDC) for phased response to WN virus surveillance data (see CDC chart as adapted below). Spraying for adult mosquito control will be considered when surveillance demonstrates evidence of amplification of WNV.
Once surveillance data indicate that this threshold is met and a decision to spray is made by the Director of Health, spray locations, boundaries, and frequency of adulticide application will be decided based on the spatial distribution and density of vectors shown by surveillance, infected birds, distribution of human cases, local ecological considerations, population at risk, and other relevant factors.
Public Notification
If a decision is made to spray, MPHD will fulfill the public notification expectations described in the ordinance, but opt-out provisions are not appropriate when adulticide application is conducted to reduce a documented threat to public health.
Steps will be taken to inform the public through local television, radio, print media, MPHD’s website, emails to individuals who have requested individual notification and phone calls to homes in the area to be sprayed. MPHD will keep a database of phone numbers for individuals who want to be notified when a spraying event is scheduled. We will attempt to notify the individuals of spraying events using an automated phone system.
Metro Public Health Department will post signs at least 48 hours before spraying is conducted. MPHD will use its best efforts to post the signs within 100 feet of all entry intersections around the perimeter of the affected spray area and all major artery intersections within the affected spray area. The signs will read ”Mosquito virus risk. Spray zone” and will include the date and time of spraying, as well as a phone number and web site where additional information can be obtained.
Local emergency rooms, poison control center, and physicians and veterinarians who are participants in the Tennessee Health Alert Network or a similar listserv will be advised by health alert of the plans for ULV, the profile of the agents used and the anticipated levels of exposure.
Additional Public Relations Steps
For persons who choose to take steps to avoid exposure to the spray, several warning opportunities are in place. First, public communication outlined above will indicate the areas to be sprayed and the time of day when spraying is planned. Lead trucks will drive ahead of the spray trucks as an additional notification of spraying. Horns (before 8:00 PM), flashing lights, and noise from the spray equipment will also help to alert pedestrians. These measures should be sufficient to forewarn pedestrians who wish to reduce potential for exposure to pesticides by moving away from the path of the truck.
ULV application applies <3 ounces of formula (2% anvil) per acre of land. The dose of pesticides for individuals who are outdoors in the swath of the ULV pesticide is low. This situation is not regulated by EPA and exposures would be below thresholds for significant documented public health concern.
However, because of potential for public concern, reasonable efforts to avoid spraying groups of people will be taken. For example, spraying in public parks where large numbers of people have congregated will be delayed and the area will be sprayed at a later hour.
The effectiveness of spraying efforts will be monitored by counting the numbers of mosquitoes in traps before and after spray events and calculating changes in the density of infected mosquitoes.
We will also create a database to record complaints related to mosquito management.
Human Case Surveillance
The goals of human case surveillance are to assess local impacts of WN virus, monitor trends and identify geographic areas in need of targeted mosquito control interventions. A positive case by itself will not be used as an independent trigger for application of adulticides.
MPHD works with Tennessee State Department of Health to conduct follow-up of potential human cases of West Nile disease in Davidson County. The Tennessee State Department of Health also attempts to keep health care providers informed of the procedure for definitive diagnosis via laboratory testing of potential arboviral infections.
When a laboratory confirmation of a human case is made, MPHD staff will provide educational materials to residents in the area, and provide information on mosquito breeding sites reduction and ways of avoiding mosquito bites to residents of Davidson County through local media. We may also deploy ad hoc traps to the area to obtain information on WN virus activity.
For more information on mosquito management, contact the Health Department at 340-5668 or through the Department’s web site (http://healthweb.nashville.gov).
Director’s Update to the Board of Health April 8, 2008
Budget Mayor Karl Dean submitted his budget to the Metro Council on March 25. The Mayor’s budget cut $1.8 million or about 6% from the Health Department’s local funding for July 1, 2008 through June 30, 2009. This cut equates to 22 positions from the Health Department’s operating budget. Fourteen of the 22 cut positions are filled; eight are vacant. The Executive Management Team is working diligently to place as many of the impacted employees into existing vacant positions as possible. Also, those employees who are currently in positions that have been deleted from next year’s budget are receiving help from the Health Department’s HR division and the HR staff downtown in efforts to secure jobs with other Metro Departments. Staff who have not secured a job by May 12, 2008 will be placed on a lay off list that will be submitted to the Board at the May 13 Board of Health Meeting. This list should be short as several employees have already found placements in other jobs at the Health Department.
Budget improvements were granted for the following contractual services: Correctional Health, $982,500 and Forensic Medical Examiner, $168,200.
This Week Is Public Health Week! The national theme for this week is Climate Change: Our Health in the Balance. Yesterday Drs. Manuel Riemer and Diane Levine from Vanderbilt University gave a presentation in the Lentz Auditorium about climate change and its link to public health. By making climate change the theme for 2008, the American Public Health Association and the entire public health community is changing how society addresses this unprecedented challenge. This week MPHD employees are celebrating Public Health Week through a series of educational events and activities. More importantly staff are challenged to implement behavior changes consistent with this year’s theme such as participating in recycling and using alternate modes of transportation to and from work.
In observance of Public Health Week, Mayor Karl Dean took action to re-invigorate and brand the existing Healthy Nashville effort. Mayor Dean launched the “Let’s Get Moving Challenge” on Saturday, April 5th at the Richland Creek Greenway. The Mayor then led Nashvillians on a 2.5 mile walk through the greenway. Metro Parks, the Health Department, and Healthy Nashville council members were amongst the participants. Thanks to Ms. Janie Parmley, Vice Chair of the Healthy Nashville Council, for participating in the walk on Saturday.
On Wednesday, April 9 at noon and again at 3:30 “The Kilowatt Our” will be shown in the Lentz Auditorium. The movie is approximately 25 minutes long and highlights how we can be more energy efficient through conservation and green power. A representative will also be available to answer questions.
For more details and Public Health Week activities, please visit our website.
Homeless Management Information System (HMIS) Has a New Home On April 1, 2008, the Health Department transferred the operation of the HMIS and the Federal grant to MDHA. The Health Department constructed this data management system from the ground up, but getting agencies to input data was a challenge. Since MHDA has enforcement capability through Federal grant management, MHDA was seen as the more appropriate agency to handle continued implementation of the system.
Division of TB Elimination On March 24th, Dr. Celia Goodson joined the MPHD as the fulltime TB physician. Dr. Goodson has urgent care and emergency room as well as private practice experience. We are pleased to have her on board.
Division of Sexually Transmitted Diseases (STDs) HIV Testing Day – The STD team is partnering with the faith community, local HIV service providers, and Metro Councilman Jerry Maynard to implement a faith-based HIV testing initiative which will kick off on National HIV Testing Day, June 27, 2008. Goals of the initiative include increasing HIV testing amongst the African American population in Nashville, decreasing stigmatization of HIV testing amongst the population, and empowering local ministers to serve as ambassadors to their communities regarding HIV, including access to testing and treatment.
Tobacco Approximately 30 youth from elementary, middle and high schools participated in this year’s Kick Butts Day. The Health Department’s youth Advisory Board (YAB), Tobacco Control Program, the Vanderbilt-Ingram Cancer Center, CHAT and the Tennessee Comprehensive Cancer Control Coalition hosted Kick Butts Day on March 29th at the Spruce Street Missionary Baptist Church.
The event was planned by our YAB members. They identified speakers and performers and also created and delivered tobacco presentations including an introductory Reward/Reminder training session.
Through a collaboration between the Health Department and Nashville Prevention Partnership (NPP), eight YAB members were recognized for their outstanding service to the tobacco surveillance project, Reward and Reminder. Each participating YAB member received $400.00 compensation for their efforts from NPP.
Family, Youth and Infant Health Project Blossom, in conjunction with the Federal and State Offices of Minority Health, March of Dimes and its community partners are sponsoring a “Healthy Woman Healthy Future” Conference on Wednesday, April 9 from 2:00 – 7:00 PM. This event will be held at Fisk University’s Henderson Gymnasium, is free to the public, focuses on components of preconception health, and targets young women. Tonya Lewis-Lee (film producer Spike Lee’s wife) as well as the HHS Deputy Assistant Secretary for Minority Health and the March of Dimes National Ambassador Family will be in attendance.
Step Up To Health Step Up To Health held its spring step show on March 29. The show featured step teams from as far away as California and local teams which are part of the diabetes prevention grant. The girls’ team from Hadley Park came in second in the middle school category. Step teams are a great way to encourage youth to stay involved in physical activity.
Breast and Cervical Screening Program During 2007 the Breast and Cervical Cancer Screening Program linked 981 women to care for further testing and treatment of suspected cancer and enrolled 93 into TennCare. Across the state, there were 13,762 women served.
The Ryan White Program received notification of their award for the second year of the Part A and Minority AIDS grants. Each grant had a slight increase for year two. The Part A amount is $3,532,078 and started April 1. The Minority AIDS amount is $211,298 and starts August 1. The Mayor has appointed the members of the Ryan White Planning Council. There are currently 23 members; members are reflective of the community and are residents from several Davidson County and neighboring communities. Finally, the STD Clinic is now a Ryan White provider. Their focus is to assure that newly diagnosed persons connect with and remain in HIV medical care.
Environmental Protection Agency’s (EPA) Final Early Action Compact (EAC) Designation On April 2, 2008, EPA designated Nashville and 12 other EAC areas as attainment for the 1997 eight hour ozone National Ambient Air Quality Standard (NAAQS). The designations will become effective April 15, 2008. The EAC areas agreed to reduce ground level ozone pollution earlier that the Clean Air Act required and to demonstrate attainment with the 1997 eight hour ozone NAAQS by December 31, 2007. Nashville and the other 12 EAC areas have submitted quality assured data indicating that the areas are in attainment for the eight hour ozone NAAQS based on ambient air monitoring data for 2005, 2006, and 2007.
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