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Lanham, MD; January 4, 2012 -- Lyme disease is the most commonly reported vector-borne disease in the United States, with the majority of cases occurring in the Northeast. It has been three decades since the agent of the disease, the spirochete Borrelia burgdorferi, and the ticks that vector it were identified. However, the number of Lyme disease cases have steadily increased.
In a new article appearing in the forthcoming issuue of the Journal of Medical Entomology called "What Do We Need to Know About Disease Ecology to Prevent Lyme Disease in the Northeastern United States?" authors from Colorado State University and the Centers for Disease Control assess the potential reasons for the continued lack of success in prevention and control of Lyme disease in the northeastern United States, and they identify conceptual areas where additional knowledge could be used to improve Lyme disease prevention and control strategies.
Some of these areas include: 1) identifying critical host infestation rates required to maintain enzootic transmission of B. burgdorferi, 2) understanding how habitat diversity and forest fragmentation impacts acarological risk of exposure to B. burgdorferi and the ability of interventions to reduce risk, 3) quantifying the epidemiological outcomes of interventions focusing on ticks or vertebrate reservoirs, and 4) refining knowledge of how human behavior influences Lyme disease risk and identifying barriers to the adoption of personal protective measures and environmental tick management.
The article briefly summarizes existing prevention and control strategies and tools aimed at reducing human exposure to vector ticks and B. burgdorferi, and highlights conceptual areas where additional studies on the enzootic transmission cycle or the human-tick interface are needed to fill in the knowledge gaps preventing the development of novel, more effective Lyme disease prevention strategies and tools or the implementation of existing ones.
Because the likelihood of human exposure to the tick and the pathogen both can be influenced by human behavior, the authors focus not only on the density of infected ticks, which represents the fundamental (or acarological) risk of human exposure to B. burgdorferi, but they also provide an overview of studies that identify behavioral risk factors and explore areas where additional information in this field are needed.
The Journal of Medical Entomology (http://entsoc.org/Pubs/Periodicals/JME) is a bimonthly peer-reviewed journal that publishes reports on all phases of medical entomology and medical acarology, including the systematics and biology of insects, acarines, and other arthropods of public health and veterinary significance. It is published by the Entomological Society of America (http://www.entsoc.org), the largest organization in the world serving the professional and scientific needs of entomologists and people in related disciplines.