Navigation Links
Rabies spread speeds up

Though most rabies fatalities in the United States stem from bat bites, far more people are treated for raccoon rabies. In 1990, raccoons topped the list of most often reported rabid mammal. Controlling the spread of rabies depends on predicting the spatial dynamics of the disease - where new outbreaks might occur and how the virus might spread. In a new study reported in the freely-available online journal PLoS Biology, Real and colleagues apply a mathematical model to predict the likely spread of rabies across Ohio - a potential gateway for spread throughout the Midwest - and find that raccoon rabies could spread throughout the state in just three years, far faster than previously thought.

One strategy for limiting rabies spread is to establish vaccine corridors by distributing vaccine baits - vaccine doses hidden in fishmeal - to wild raccoons. This cordon sanitaire strategy limited rabies in Ohio to sporadic cases from 1997 until 2004, when a single rabid animal was detected - 11 kilometers beyond the buffer zone - in northeastern Ohio. By modelling the spread of past outbreaks, the authors had already shown that local transmission was significantly reduced when townships were separated by geographical barriers. The authors incorporated the likely effect of Ohio's five major rivers on transmission from local points along the Pennsylvania or West Virginia border but also adjusted their model to estimate the potential impact of long distant translocations, such as the occasional garbage truck ride. They estimated that rabies would take just 33 months to spread across central Ohio - compared to 48 months to cross the much smaller state of Connecticut - and cover the state within 41 months. This transmission rate - 100 kilometers/year - significantly surpasses previous estimates, which range from 30 to 60 kilometers/year. The potential for such rapid spread, if unchecked, "is quite alarming," the authors warn.

Given the unpredictable nature of rabies transmission - challenging efforts to identify potential leaks in vaccine corridors and sites of dispersal - the authors' simulations provide a valuable resource for anticipating alternate outbreak scenarios and preparing multiple game plans to prevent or contain them. They also indicate the best sites for establishing a new vaccine barrier. And given how fast raccoon rabies could spread, Real and colleagues make a strong case that halting its western march depends on a strategy based on early detection and high-powered intervention programs - a sensible approach for any infectious disease.

###

Citation: Russell CA, Smith DL, Childs JE, Real LA (2005) Predictive spatial dynamics and strategic planning for raccoon rabies emergence in Ohio. PLoS Biol 3(3): e88.


'"/>

Source:PLoS Biology


Related biology news :

1. Anti-bacterial additive widespread in U.S. waterways
2. HIV-1 spread through six transmission lines in the UK
3. Reservoirs may accelerate the spread of invasive aquatic species, researchers say
4. Undesirable expatriates: Preventing the spread of invasive animals
5. Nanobacteria in clouds could spread disease, scientists claim
6. New understanding of cell movement may yield ways to brake cancers spread
7. VCU Massey Cancer Center study shows enzyme linked to spread of breast cancer cells
8. Industrial contaminants spread by seabirds in High Arctic, new Canadian study shows
9. Past droughts geographically widespread in the West, according to tree-ring data
10. Mosquito study shows new, faster way West Nile can spread
11. Infectious disease expert warns of spread of Rocky Mountain spotted fever
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/13/2017)... 2017 UBM,s Advanced Design and Manufacturing event ... emerging and evolving technology through its 3D Printing and ... alongside the expo portion of the event and feature ... focused on trending topics within 3D printing and smart ... event will take place June 13-15, 2017 at the Jacob ...
(Date:4/11/2017)... , April 11, 2017 NXT-ID, ... security technology company, announces the appointment of independent Directors Mr. ... to its Board of Directors, furthering the company,s corporate ... ... NXT-ID, we look forward to their guidance and benefiting from ...
(Date:4/4/2017)... --  EyeLock LLC , a leader of iris-based identity ... and Trademark Office (USPTO) has issued U.S. Patent No. ... iris image with a face image acquired in sequence ... th issued patent. "The issuance ... multi-modal biometric capabilities that have recently come to market ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... October 11, 2017 , ... ... and pregnancy rates in frozen and fresh in vitro fertilization (IVF) ... maternal age to IVF success. , After comparing the results from the fresh ...
(Date:10/10/2017)... ... 10, 2017 , ... For the second time in three ... Mentoring Award. Representatives of the FirstHand program travelled to Washington, D.C. Tuesday, October ... US2020’s mission is to change the trajectory of STEM education in America by ...
(Date:10/10/2017)... (PRWEB) , ... October 10, 2017 , ... ... innovation and business process optimization firm for the life sciences and healthcare industries, ... conference in San Francisco. , The presentation, “Automating GxP Validation for Agile ...
(Date:10/9/2017)... ... October 09, 2017 , ... At its national board meeting in North Carolina, ... Harvard University’s Departments of Physics and Astronomy, has been selected for membership in ... team for the 2015 Breakthrough Prize in Fundamental physics for the discovery of the ...
Breaking Biology Technology: