HOME >> MEDICINE >> NEWS
Broad-based vaccination of wild mice could help reduce lyme disease risk in humans

nown as erythema migrans, as well as fatigue, chills and fever, headache, muscle aches and joint pain. Early treatment prevents the development of more debilitating symptoms. Lyme disease is most commonly found in the northeastern, mid-Atlantic and upper north-central regions of the United States, as well as parts of northwestern California.

In their study, the research team took aim at the larval form of the blacklegged tick, the crucial stage during which a tick becomes infected with B. burgdorferi. Normally, uninfected tick larvae pick up the bacterium the first summer of their two-year life cycle while taking their first blood meal from infected small animals, such as the white-footed mouse. The white-footed mouse is considered a key animal reservoir for Lyme disease. One year later, after the larva develops into a nymph, it feeds on a second animal host, possibly a human, infecting that host. Roughly 90 percent of human infections are contracted from nymphal ticks.

The researchers' goal was to reduce the level of B. burgdorferi infection in nymphal ticks. By vaccinating a large sample of white-footed mice, the researchers hypothesized, fewer tick larvae would become infected the first summer and, in turn, fewer nymphs would be capable of transmitting the disease to humans the following summer.

Throughout the summers of 1998 and 2001, researchers trapped and vaccinated a total of more than 900 mice in 12 different forested sites in Connecticut--six unique sites each summer. In half of the sites, mice received injections of active vaccine; in the other six sites, mice received a placebo.

The vaccine contained a recombinant protein--called OspA--normally found on the outer surface of B. burgdorferi in ticks but not in mice. The vaccine is based on one previously used in humans and currently used in dogs. When an infected nymph feeds on an immunized mouse, the animal's antibodies kill the bacterium inside the nymph, preventing the ny
'"/>

Contact: Jennifer Wenger
jwenger@niaid.nih.gov
301-402-1663
NIH/National Institute of Allergy and Infectious Diseases
13-Dec-2004


Page: 1 2 3 4

Related medicine news :

1. Many children are undervaccinated or have delayed vaccinations in their first 2 years of life
2. Influenza vaccination programmes for children in USA and Canada based on little evidence
3. Flu vaccination benefits people of any age with high-risk medical conditions
4. Flu vaccination impact on elderly deaths may be over-estimated
5. Risk factors affect parents attitudes about STD vaccinations
6. Parents comfortable with vaccination for sexually transmitted infections for adolescent children
7. Study documents decline in rare paralytic disorder linked to influenza vaccination
8. Annual vaccination against influenza associated with decreased risk of death in elderly
9. Hib infections on the rise in adults despite child vaccination programme
10. Most physicians agree that widespread routine influenza vaccination for young children is feasible
11. Childhood vaccination coverage affected by temporary suspension of hepatitis B vaccine

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:1/20/2017)... ... January 20, 2017 , ... ATP Science, an ... lives, recently attended the January ECRM Trade Show in Hilton Head, SC, benefiting ... its large range of supplements that keep the body functioning at its peak ...
(Date:1/20/2017)... ... January 20, 2017 , ... "TransFlare 4K Mystique comes with 44 colorful mysterious ... X," said Christina Austin - CEO of Pixel Film Studios. , TransFlare 4K ... 4K Mystique lens flare and light leak transitions have a very high-dynamic range for ...
(Date:1/20/2017)... ... ... “The Angel”: a heartwarming and earnest tale of faith and believing ... “The Angel” is the creation of published author, Marjorie Lund-Fontaine, a former professional violinist, ... , When asked of her new book, Marjorie says, “‘The Angel’ was written as ...
(Date:1/20/2017)... ... January 20, 2017 , ... D R Burton ... (OPEP) device, was featured in a study indicating superior performance against competitive products ... “Analysis of Three Oscillating Positive Expiratory Pressure Devices During Simulated Breathing“ was published ...
(Date:1/20/2017)... ... 2017 , ... “Knowledge is God’s Lighthouse”: a moving and colorful collection ... is the creation of published author, Gene Gaapf, a retired truck driver, and a ... have been writing since high school and have many different titles,” Gaapf mentions about ...
Breaking Medicine News(10 mins):
(Date:1/21/2017)... ResMed (NYSE: RMD ), BMC ( ... Florida ) today announced they have agreed on a global ... be permitted to sell their existing products in exchange for royalty ... to 3B to close the Florida litigation ... of liability or wrongdoing by any party. The ...
(Date:1/21/2017)... -- Research and Markets has announced the addition of ... Route Of Administration, End User - Forecast to 2025" report ... ... a CAGR of around 7.8% over the next decade to reach ... analyzes the global markets for Advanced Drug Delivery across all the ...
(Date:1/20/2017)... , Jan. 20, 2017  Ethicon ... acquired Megadyne Medical Products, Inc., a privately ... and markets electrosurgical tools used in operating ... intelligence of Ethicon,s* advanced energy devices with ... a major step forward in Ethicon,s goal ...
Breaking Medicine Technology:
Cached News: