Current Weather
The Spy FM

Tick Tally Reveals Lyme Disease Risk

Filed by KOSU News in US News.
February 1, 2012

Roll call for bloodsuckers. Vampires, step back.

For four years, researchers combed through hundreds of state parks and bushy areas looking for the culprit responsible for Lyme disease. The blacklegged tick, also known as a deer tick, transmits the disease through a bite.

About 20 percent of the 5,332 ticks collected in the Eastern half of the country were infected with the bacterium that causes Lyme disease.

Lead author Maria Diuk-Wasser says her suspicion about where her team would find infected ticks — and the subsequent risk for the disease — was confirmed when she mapped the data.

“We suspected strongly that we wouldn’t find [infected ticks] in the South,” the Yale epidemiologist tells Shots. “The tick is found in the South, but it’s not infected and it doesn’t feed on humans, but on lizards.” Researchers found the highest risk of infection for humans in the Northeast, Mid-Atlantic and Upper Midwest.

Previous maps have shown where people reported cases of the disease, but not where they contracted it. The new study includes a map of infected tick infestations. The findings appear in the American Journal of Tropical Medicine and Hygiene.

An estimated 30,000 cases of Lyme disease in the U.S. were reported in 2010, according to the Centers for Disease Control and Prevention. To get sick with the disease, a person has to be bitten by a tick that’s carrying the bacterium Borrelia burgdorferi.

The ticks, usually in their immature, or nymphal, stage live in overgrown brush and leaf litter. The infection usually passes on to a human after a tick has been latched on for 36 to 48 hours. So, keep the ticks off you and make sure to check yourself after wading through shrubbery and other places the ticks hang out.

Early in the disease, people tend to suffer a bull’s-eye-shaped rash, chills, a fever and aches. If treated early with antibiotics, patients usually recover in a few weeks. But if the condition goes untreated, later symptoms can include severe headaches, Bell’s palsy and heart palpitations.

Lyme disease can be a tricky condition to diagnose, Diuk-Wasser says. Some activists believe the number of cases is actually higher than the is reported by CDC. (The center calculates the number of cases based on reports from county medical professionals.)

“It’s more of a reporting problem,” Phillip Baker, executive director of the American Lyme Disease Foundation, tells Shots. Diuk-Wasser agrees and says many cases are missed, misdiagnosed or aren’t reported at all.

On the other hand, some tests can give false positives. There are a lot of people who think they have the disease but don’t, Baker says.

Diuk-Wasser says she hopes the new map can act as a tool for doctors to understand how likely the disease is to show up in their neck of the woods.

“When a doctor sees a rash in the South, he shouldn’t immediately be thinking it’s Lyme disease,” she says. “And in areas where the ticks are expanding to, doctors should start thinking that Lyme disease is a possibility.”

She cautions that it’s possible to get the disease in the South — just highly unlikely.

Next up for Diuk-Wasser is a closer examination of areas where the species may be moving in. She’s already heard from some collaborators that the population is growing in Virginia.

“Ticks have expanded following reforestation and deer expansion,” she says. [Copyright 2012 National Public Radio]

One Response to “Tick Tally Reveals Lyme Disease Risk”

  1. Karen says:

    Lyme I know from working with pts. including me never reported.
    So underreported it is very upsetting includig the 1,000`s of chronic Lyme never helped so ill. All diff symptoms still from Lyme.
    Thank You, Karen Tuhcek

Leave a Reply

2PM to 3PM The Dinner Party

The Dinner Party

Think NPR meets Vanity Fair. In each episode, hosts Rico Gagliano & Brendan Francis Newnam talk with some of the world's most interesting celebrities, and along the way equip you with bad jokes, fresh drink recipes, hot food finds, odd news stories... and etiquette tips from the likes of Henry Rollins and Dick Cavett. It's all you need to get an edge in your weekend conversations. Past guests include Michelle Williams, Judd Apatow, Kid Cudi and Sir Richard Branson. Wallpaper magazine calls The Dinner Party one of the Top 40 Reasons To Live In The USA.

Listen Live Now!

3PM to 4PM The Splendid Table

The Splendid Table

Hosted by award-winning Lynne Rossetto Kasper, The Splendid Table is a culinary, culture and lifestyle program that celebrates food and its ability to touch the lives and feed the souls of everyone.

View the program guide!

4PM to 5PM Weekend All Things Considered

Weekend All Things Considered

View the program guide!

Upcoming Events in your area (Submit your event today!)

Streaming audio and podcasts

Stream KOSU on your smartphone

Phone Streaming

SmartPhone listening options on this page are intended for many iPhones, Blackberries, etc. with low-cost software applications available to listen to our full-time web streams, both News on KOSU-1 and Classical on KOSU-2.

Learn more about our complete range of streaming services

We're perfecting the patient experience - Stillwater Medical Center