Source: TUFTS UNIVERSITY submitted to NRP
MASSACHUSETTS ORAL RABIES VACCINATION PROGRAM AND ANIMAL DISEASE SURVEILLANCE
Sponsoring Institution
Cooperating Schools of Veterinary Medicine
Project Status
COMPLETE
Funding Source
Reporting Frequency
Annual
Accession No.
0209908
Grant No.
(N/A)
Cumulative Award Amt.
(N/A)
Proposal No.
(N/A)
Multistate No.
(N/A)
Project Start Date
Oct 23, 2006
Project End Date
Jun 30, 2007
Grant Year
(N/A)
Program Code
[(N/A)]- (N/A)
Recipient Organization
TUFTS UNIVERSITY
200 WESTBORO ROAD
N. GRAFTON,MA 01536
Performing Department
ENVIRONMENTAL & POPULATION HEALTH
Non Technical Summary
The Cape Cod Oral Rabies Vaccination Program was established in 1993. The original goal of the project was to prevent the spread of rabies onto Cape Cod. For 10 years, we were successful in keeping raccoon rabies off Cape Cod despite epizootic challenge. In March of 2004 a breach in the vaccine barrier to Cape Cod was identified. Wildlife Disease Surveillance Project: in order to strengthen the capabilities of the state of Massachusetts to guard the public health by monitoring, detection and response to animal disease outbreaks, it is necessary to increase the vigilance for zoonotic threats associated with agricultural, pet or wild animals. The goal will be to reduce the prevalence of rabies and, over the longer term, eradicate rabies from Cape Cod. Continuation of the Oral Rabies Vaccination (ORV) Program at this stage has several long-term benefits for public health in Massachusetts and the rest of the US. Massachusetts has the nations' longest continuously running ORV project. The rabies vaccination program is an example of efficient and effective cooperation of local, state, private and federal agencies working together for the benefit of the public health and animal health. Wildlife Disease Surveillance Project: Tufts Cummings School of Veterinary Medicine (TCSVM) shall develop standard operating procedures (SOPs), protocols, inter-agency networks, and other tools to implement a program to conduct background monitoring of disease in domestic and wild animals.
Animal Health Component
100%
Research Effort Categories
Basic
(N/A)
Applied
100%
Developmental
(N/A)
Classification

Knowledge Area (KA)Subject of Investigation (SOI)Field of Science (FOS)Percent
72208301170100%
Goals / Objectives
Tufts Cummings School of Veterinary Medicine (TCSVM) established The Cape Cod Oral Rabies Vaccination Program (CCORVP) in 1993, in cooperation with the Massachusetts Department of Public Health (MDPH), the Centers for Disease Control and Prevention (CDC), and USDA Wildlife Services. The original goal of the project was to prevent the spread of rabies onto Cape Cod. For 10 years, from the first vaccine distribution in May 1994 to March 2004, we were successful in keeping raccoon rabies off Cape Cod despite epizootic challenge. We also succeeded in achieving the highest vaccination rates in raccoons for any vaccine program in the country. In March of 2004 a breach in the vaccine barrier to Cape Cod was identified, due to many factors including the possible role of skunks in the transmission cycle of raccoon rabies. Response to this initial breach in the vaccine barrier was rapid, and included many multi-agency coordinated actions. The Oral Rabies Vaccination (ORV) project will continue to assess the various factors involved in the breach of the vaccine barrier and the effectiveness of the initial response, in order to better prevent future barrier weakness, and to formulate the best response strategies. Our goals in Phase I - response to the breach - are to 1) reduce to zero rabies cases in all effected Cape Cod towns, and 2) maintain a vaccinated area for at least 2 years beyond the detection of the last rabies case in the area. Rabies eradication has been defined as zero cases occurring for 2 years in an area. The goals of Phase II - reestablishment of a mainland vaccination barrier to maintain a rabies-free Cape Cod - are 1) establish a barrier to the spread of rabies to Cape Cod by creating an area of vaccinated raccoons, adjacent to the Canal, 2) stop vaccinating areas on Cape Cod in stages as the barrier on the mainland expands (target of 3 years after last rabies case for complete withdrawal of vaccine distribution from the Cape), and 3) rabies eradication in 10 mile radius on mainland side of Cape Cod canal. The goals of Phase III - expansion of a mainland vaccination barrier to eradicate rabies in adjacent towns - are 1) advance rabies vaccination zone into rabies enzootic areas by adding 10 miles in width to a 30 mile wide vaccine zone each year, 2) stop vaccinating areas on trailing edge of vaccine zone (ideally 10 miles per year). In Phase IV - eradication of rabies statewide - the goal is to keep advancing vaccination zone until all of Massachusetts is rabies free. Wildlife Disease Surveillance Project: In addition, in order to strengthen the capabilities of the state of Massachusetts to guard the public health by monitoring, detection and response to animal disease outbreaks, Tufts Cummings School of Veterinary Medicine (TCSVM) shall develop standard operating procedures (SOPs), protocols, inter-agency networks, and other tools to implement a program to conduct background monitoring of disease in domestic and wild animals. The project has three phases: developing the sampling and handling protocols, obtaining clinical and necropsy samples, and reassessing the protocols after the initial sampling efforts.
Project Methods
With the goals of reducing the numbers of rabies cases and, over the longer term, eradicating rabies from Cape Cod, we will use the following tools: rabies vaccine baiting of wildlife, enhanced disease surveillance of wildlife(see attached addendum), improved program partner coordination and communication, risk communication and public education, emergency response planning. 1. At least one vaccine distribution (in the fall) and preferably two distributions over as large an area of Cape Cod as possible, given bait purchase constraints. Recent improvements in vaccine packaging will be tested for impact on vaccination rates and rabies case incidence 2. Coordination of activities of towns, county government, and volunteers for both vaccine distribution, and rabies surveillance. Wildlife Disease Surveillance Project: We will initially focus on syndromes and infectious diseases as defined by the Massachusetts Department of Public Health (MDPH), Bureau of Communicable Disease Control (BCDC), Massachusetts Department of Agricultural Resources (MDAR), Bureau of Animal Health (BAH), and Division of Fisheries & Wildlife (DFAW) for the purpose of increasing vigilance for zoonotic threats to the public associated with agricultural, pet or wild animals in Massachusetts. We will develop protocols for serosurveillance and banking of samples from targeted species, collection and analysis of data on unusual animal deaths, and strengthening the infrastructure to support MDPH, MDAR and the response to zoonotic disease threats of the veterinary community in Massachusetts. During development of the protocols, efforts will be made to identify and establish communication with agencies and groups in Massachusetts that should be involved in various aspects of monitoring, surveillance and response to animal diseases. This will include veterinarians, wildlife rehabilitators, animal control agents, the academic community, state agencies, local boards of health, and others. Protocols will be developed in conjunction with the appropriate state agencies. As the SOPs are developed, a pilot sampling program utilizing the Wildlife clinic at TCSVM and other sample sources will be initiated allowing the protocols to be tested and refined. We will work with TCSVM hospitals and state agencies to do surveillance, microbiological sampling, and necropsy of wildlife and domestic animals. These efforts will have two goals: to help develop and test the new protocols and SOPs, and to begin gathering background data on target syndromes and diseases.

Progress 10/23/06 to 06/30/07

Outputs
OUTPUTS: The Oral Rabies Vaccine (ORV) Project distributed vaccine-bait units in a 525km2 area over the ten towns comprising the eastern half of the Cape. A total of 115,633 vaccine bait units were distributed over the zone; 77,496 bait blocks and 38,137coated sachets. Ground distribution of baits consisted of both block and coated sachet formulations for a total of 102,099 baits. Of these 100,299 were distributed by hand. A priority was placed on increasing the efficiency of the bait distribution so as to maximize the saturation of the entire baiting zone over as short a time as possible. Increased effort in organization and pre-planning allowed us to meet our goals of completing each ground baiting distribution within 5 days. Surveillance efforts yielded a total of 75 animals positive for terrestrial rabies out of 222 testable submissions from the Cape. In 2006 positivity rates in both skunks and raccoons were significantly reduced in the second half of the year following the spring vaccine distribution. The overall positivity rate for all samples submitted dropped from 47.8% to 12.5% between the first and second halves of the year. Other than raccoons, no wildlife species tested positive in the second half of the year. Despite the spread of rabies on the Cape, no domestic animal tested positive for rabies in 2006. This marks the second full year with no domestic animal rabies cases in Barnstable County in spite of the ongoing epizootic. TCSVM and MDPH had mechanisms in place to receive calls from members of the public who had contact with the vaccine/bait units after distribution. Information sheets on the ORV program were distributed to town health departments, local MD's, DVM's, emergency rooms and veterinary clinics in which we requested that calls regarding human exposure be reported to MDPH, while calls regarding pet exposure be directed to TCSVM. To our knowledge, no adverse effects from vaccine exposure have occurred this year or any other year in Massachusetts. The primary focus of the Wildlife Disease Surveillance Project this year has been to continue to develop communication pathways and collaborative efforts with the many state, regional and federal agencies, academic and other private organizations with interests in the issues of emerging infectious zoonotic diseases and their potential effects on human and animal health in Massachusetts. To accomplish this goal we have continued to coordinate and host monthly statewide Animal Surveillance and Education Committee (ASE) meetings at the Tufts Cummings School of Veterinary Medicine (TCSVM). We have continued to expanded the membership of the committee and now include participants from over 25 different agencies and interest groups lending their perspective and expertise. This committee is now seen as effective in facilitating collaborative efforts and providing a venue for networking and forming informal partnerships with others in the state and sharing information and ideas of mutual benefit. We have become an example that is unique in the New England region for effective interagency communication and cooperation. PARTICIPANTS: Nothing significant to report during this reporting period. TARGET AUDIENCES: Nothing significant to report during this reporting period. PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.

Impacts
The dramatic decrease in positivity rate from June through Dec possibly reflects several changes in baiting strategy in 2006. These changes may have resulted in enough vaccinated animals in the population to slow overall transmission rates by the second half of the year. These changes included scheduling the first baiting in 2006 in early May, rapid saturation of the area by accomplishing the bait distribution in only 5 days, covering a larger land area than previously baited, and continuing overall high bait densities at ~135 baits/km2 with the ground baiting. Despite the spread of rabies on the Cape, no domestic animals tested positive for rabies in 2006. This marks the second full year with no domestic animal rabies cases in Barnstable County in spite of the ongoing epizootic. Since domestic animals provide the most common link for exposure between rabid wildlife and humans, this result is a measure of the success of continued efforts by local and state health departments and Oral Rabies Vaccination Program on Cape Cod to educate the public about protecting themselves and their pets from rabies exposures, and the efforts of this program to reduce rabies exposures through the oral vaccination of wildlife. Creating and expanding working collaborations within Massachusetts has strengthened our ability to respond effectively to emerging zoonotic disease threats within the state and regionally. Our FAQ sheet will greatly aid in the ability of each agency to respond with a standard answer and help maintain an overall consistency to the information being disseminated throughout the state. It also allows each agency to refer more specific questions onward to the appropriate agency for those answers that are specific to each individual agency's area of expertise. By refining our sampling protocols we increase our ability to act as a resource for the state to respond to wildlife disease events. With TCSVM acting as a resource for multi-agency statewide efforts to monitor infectious zoonotic disease in wildlife we have increased the protection of the public health.

Publications

  • No publications reported this period