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BBC News: "Ticks that can transmit Lyme disease may be more prevalent in the UK than realised, say researchers who have found out how many dogs harbour them.
Experts have suspected for some time that the UK has a growing problem with these tiny pests - rates of the disease have been creeping up in recent years.
In 2010 there were 953 reported cases in England and Wales.
Now, after doing random checks on over 3,500 dogs, Bristol University experts suspects the problem is even bigger.
Of the 3,534 pet dogs inspected at veterinary clinics in the UK between March and October 2009, 14.9% had ticks.
Of these, 2.3% turned out to be infected.
The expected prevalence of infected ticks on dogs is 0.5% or 481 infected ticks per 100,000 dogs.
This suggests that the prevalence of this Borrelia infection in the UK tick population is considerably higher than previously thought, the researchers report in the journal Comparative Immunology, Microbiology and Infectious Diseases.
Faith Smith, who led the research, said: "Lyme disease appears to be a rapidly growing problem in the UK with important health and economic impacts in terms of loss of working hours and potential decrease in tourism to tick hotspots.
"Without considerably better surveillance and routine diagnostic testing, Lyme disease is only likely to become more prevalent.
"In particular, future warmer winters might well extend the period over which ticks are active seasonally, while growing wild reservoir host populations, such as deer, will allow the tick population to expand."
Easy to miss
A bite from an infected tick can take between two days and four weeks to show and anyone who has been bitten should look for a "bulls eye" type red rash appearing around the bite.
You may also experience flu-like symptoms, such as tiredness, headaches and muscle or joint pain.
Untreated, Lyme disease can spread to the brain, heart, and joints and in extreme can cause nerve damage, paralysis and blindness.
Ticks are very small - about the size of a poppy seed - and can easily be overlooked.
Most ticks do not carry the infection, but they should be removed promptly if found.
They can be removed with tweezers or special tick hooks, pulling gently upwards away from the skin.
People who develop a rash or other symptoms after a tick bite should consult their GP.
A spokeswoman from the Health Protection Agency said it was important that people realise the risks and remain "tick aware".
"They are out there in woodland areas." She said it was best to keep to footpaths and avoid long grass where possible when out walking and to cover up the skin.
Also, brush off clothes and pet's coats before returning indoors to remove any unattached ticks that might later seek a feed."