Antibiotic Treatment of Tick Bite Prevents ONLY 20% of Lyme Disease: D Fish 
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 Antibiotic Treatment of Tick Bite Prevents ONLY 20% of Lyme Disease: D Fish

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Prevents Only 20 Percent of Lyme Disease Cases, Says
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Antibiotic Treatment of Tick Bites Prevents Only 20 Percent of Lyme Disease
Cases, Says Yale Researcher
By Ascribe, 7/10/2001 11:41
NEW HAVEN, Conn., July 10 (AScribe News) -- Even if every patient who noticed
they had a tick bite received prompt antibiotic treatment and if it were 100
percent effective in preventing Lyme disease, it would only prevent 20 percent
of the total Lyme disease cases, Yale researcher Durland Fish said.

Fish, an author on the New England Journal of Medicine's (NEJM) newly released
article on the antibiotic doxycycline's preventative effect on Lyme disease,
said the study was based only on patients who had seen and removed a deer tick.
''Most patients contracting Lyme disease never see the tick that caused
infection,'' Fish said. ''The nymphal stage of the deer tick is about the size
of a poppy seed and even though it takes three to four days for it to feed
before removing itself, most people will not notice it. This is because the
tick also secretes an anesthetic while it is feeding, as well as infectious
bacteria.''

One published study showed that only about 20 percent of patients with Lyme
disease recalled a tick bite. ''This is an amazing, but true, fact of tick
biology,'' said Fish, associate professor in the Department of Epidemiology and
Public Health at Yale School of Medicine. ''The key difference in this issue is
between tick bites that are recognized by the patients and those which are not.
Most are not.''

Unrecognized tick bites in humans cannot be studied, but animal studies done by
Fish, show that more than 80 percent of infected ticks will cause Lyme disease
in mice after 72 hours of feeding, the maximum feeding time for nymphs. This
rate, coupled with a 25 percent natural rate of infection of deer ticks in the
Northeast, yields a 20 percent chance of infection from a nymphal deer tick,
proving that Lyme disease is easy to catch.

''People who live in Lyme disease areas should take the risk of tick bites
seriously and do all they can to prevent them, keeping in mind the 20 percent
chance of infection if they miss a tick, instead of the 3 percent chance if
they find one,'' Fish said. ''Bites from deer ticks are extremely common in the
Northeast.''

One Centers for Disease Control study co-authored by Fish estimates that one in
five Westchester Country residents are bitten by deer ticks each year, an
annual average of 179,000 tick bites.

The NEJM study also reported that over 18 percent of the tick-bite patients
received a second tick bite within the 90-day study period and over 6 percent
of the patients had multiple ticks attached when they were initially observed.
''With such a high frequency of contact between ticks and people, prevention
methods other than treating tick-bites with antibiotics are badly needed,''
Fish said.



Sun, 28 Dec 2003 21:38:11 GMT
 Antibiotic Treatment of Tick Bite Prevents ONLY 20% of Lyme Disease: D Fish
There was a recent article put out (sorry, I'm so bad about recalling
info!)describing the potential use of a predator 'wasp' that might be
considered in decreasing the amount of deer ticks in an area.

There has and is a successful use of a 'predator wasp' that targets
only flies,has a short life span,is benign to other insects and people
and has been in use for over 15 years (maybe longer).

Other methods proposed were : eliminating deer populations,sterilizing
deer to limit population growth and spraying deer with a
4-poster,self-feed station.....that Dr. Fish is ,himself, being funded
to produce..........hhhmmmmmmmmmmmmmmmmm.



Mon, 29 Dec 2003 03:54:29 GMT
 
 [ 2 post ] 

 Relevant Pages 

1. Antibiotic Treatment of Tick Bites Prevents Only 20 Percent of Lyme Disease Cases, Says Yale Researcher, Yale News Release, 14 Jun 01

2. Antibiotic Prophylaxis After Tick Bite For Prevention Of Lyme Disease - An Annotated Bibliography

3. Prophylactic treatment of Tick Bites (was Tick bites)

4. 1995 and 1996: Single dose of antibiotics for treatment of tick bite

5. Prevent Lyme Disease, Check For Ticks- California

6. Tick Bites and Lyme Disease in an Endemic Setting

7. Prevention of Lyme disease after tick bites.

8. Disseminated Lyme disease after short-duration tick bite

9. Multiple Mosquito bites cause Lyme Disease (ticks too!)

10. Lyme Disease Transmission by Tick Bite

11. Ross has chronic Lyme Disease from a black dear tick bite and is wheel chair dependent


 
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