You, and your pets can help monitor tick population trends and tickborne disease risk. TickEncounter is keeping track of tick encounters, and we need all of the TickSpotters we can get! Thousands of citizen scientists like yourself are submitting REAL data that’s helping drive tick awareness tools like TickEncounter’s Current Tick Activity app.
We’ve developed a battery of tests through years of research on disease-causing microbes in ticks. Since 2006, we’ve offered this expertise as service to the general public and health agency partners. Since that time, we’ve endeavored to keep costs of this testing to a minimum to allow us to serve the greatest number of subscribers. As the popularity of the service grew, the amount of data collected also grew and we now share that data as part of Tick-Borne Disease Network passive surveillance that we hope will continue to grow and provide unprecedented insights to who is being bitten by ticks, when they get bitten, and what pathogens those ticks are carrying. We welcome feedback on our web page (www.tickdiseases.org) and encourage everyone to SAVE THE TICKS!
Our July edition of Tree-Talk focuses on ticks and tick-borne diseases. Our special guests this month are ANR Educators Tim McDermott, DVM (Franklin County) and Marcus McCartney (Washington County). Check out these videos to learn how you can protect your family, pets and livestock from the increasing threat of ticks and the diseases that they carry.
Full episode (29 minutes) including Marcus McCartney’s personal experience with Lyme disease: https://youtu.be/bKkTeJozh1U
Protecting yourself from ticks (3:30 minutes): https://youtu.be/3AwOzLxk5_g
Tick removal (3:41 minutes): https://youtu.be/9HPAuG8cS9Y
https://u.osu.edu/tick (click on the tick tab on the top left of the page)
It didn’t take long for one of America’s newest tick species to find Thomas Mather.
Mather, an entomologist who specializes in the tiny disease-carriers, had taken a team of scientists to Staten Island, New York, in hopes of collecting at least one Asian longhorned tick.
They were all of 50 feet from their car and had just unfurled a banner of white fabric, known as a tick drag, when the first longhorned tick landed in the fabric. Dragging a nearby patch of grass with the fabric, more longhorned ticks appeared. On a grass blade, Mather spotted an unusual clump and discovered dozens of tiny, seed-like tick larvae waiting for a victim to brush past.
If the Asian longhorned tick was unheard of in America just a few years earlier, it wasn’t a stranger here anymore.
Since 2013, the Asian longhorned tick has popped up in at least 11 U.S. states, mostly in the Northeast. Previously limited to Asia, Australia, New Zealand and some Pacific Islands, it likely found several ports of entry to North America, hitching a ride on animals or humans. Its ability to clone itself without a mate made colonizing new locations that much easier.
While the longhorned tick is still feeling out its range in North America, other established tick species are expanding theirs as the climate changes and the planet warms—with consequences for humans, pets and the livestock industry.
Several tick species have spread to new areas of the country, some carrying diseases that can pose serious health risks to humans, including Lyme disease, which can affect the joints, heart and nervous system, and Rocky Mountain spotted fever, a treatable but potentially fatal disease that causes fever and muscle pain.
An aggressive tick called the lone star, which has been creeping north and west from its original habitat, can transmit an illness similar to Lyme disease, as well as pass along a sugar molecule that can make humans develop severe allergies to red meat.
While the total number of tick-related illnesses is difficult to gauge since so many go unreported, the trend is clear. The number of cases of reported tick-borne diseases has been on the rise in the U.S., doubling from 2004 to 2016, and reached a record high in 2017, the latest annual data reported by the U.S. Centers for Disease Control and Prevention (CDC).
Higher temperature associated with climate change is one key factor affecting where, and how fast, ticks colonize new places, the National Climate and Health Assessment says.
Ticks can jeopardize animals’ health, too, and the longhorned species could become a formidable threat to the cattle industry, scientists said.
The longhorned tick is already suspected of killing cattle on farms in three separate Virginia counties by infecting them with Theileria orientalis, a parasite that causes fever, anemia, jaundice, and other symptoms in animals.
In a study published last week about the infections, researchers warned that the tick could put the Virginia cattle industry at risk. Once an animal becomes infected, there is no treatment or cure.
Scientists warn that the longhorned tick could proliferate quickly, and since females can reproduce without a mate, ordinary ways of controlling pest population, like sterilizing males, won’t work. A single tick can populate a new location.
“As of right now, we don’t have a great way to stop that spread,” said Kevin Lahmers, a veterinary pathologist at the Virginia-Maryland College of Veterinary Medicine, who co-authored the new study, published by the CDC.
Several research teams are collaborating with the U.S. Department of Agriculture on research and surveillance of the tick, and researchers are studying the tick’s range in other countries to try to determine its potential distribution here.
In general, ticks are expanding their ranges, Lahmers said. In Virginia, 15 to 20 years ago, Lahmers said he only saw dog ticks. Now, deer ticks—which can carry Lyme disease—are the predominant tick species there.
Fluctuating climate and weather patterns can significantly affect diseases carried by ticks, as well as those carried by mosquitoes, said Ben Beard, deputy director of CDC’s Division of Vector-Borne Diseases.
With an increasing number of days without frost, for example, the risk of disease transmission starts earlier and extends later into the year. “If you look at climate change models and see how those models are advising those areas of risk, clearly there’s an impact that it’s having,” Beard said.
In Germany, a tropical tick called hyalomma seems to have survived its first winter there, according to Ute Mackenstedt, a professor of parasitology at the University of Hohenheim, Stuttgart. Her team discovered the tick this year too early in the season to have been brought over by migrating birds.
“We expect new ticks species in Germany due to changing weather conditions,” Mackenstedt said. She said the hyalomma tick could become the second recently introduced species typically found in warmer conditions to establish a population in Germany, though it’s too early to be sure.
Hyalomma can transmit the Ebola-like Crimean-Congo hemorrhagic fever virus, though that virus hasn’t yet been found in Germany.
The longhorned tick is able to spread a virus known as SFTS, or severe fever with thrombocytopenia syndrome. It can be fatal, particularly for people over 50, but it hasn’t yet turned up in the U.S.
The CDC urges precaution against all tick species, not just the longhorned.
“There’s a huge potential here for this tick to further complicate the problems we’re already having,” said Beard of the CDC. “It’s one of those things we can’t afford to ignore, but at the same time, we have to work on the problems that are already here.”
Several research efforts are gathering data about the spread of ticks from people who photograph or mail in ticks they’ve found. Mather runs one of those efforts, a website through the University of Rhode Island called TickSpotters, where his team of researchers fields questions from people who submit photos and samples to be analyzed.
He said there’s been a clear increase in submissions over the past few years: From the site’s inception in 2014 until 2017, he saw fewer than 8,000 entries. Last year alone, he saw nearly 15,000.
One reason may be that ticks are spreading to new places. Mather said contributors frequently ask, “What’s going on? I’ve lived in this place for 15 years and never seen a tick before.”
Building a database of these findings can help researchers understand tick distribution patterns.
“It’s people that are encountering ticks a lot more than scientists,” Mather said. “TickSpotters has a chance for using the power of the crowd to help understand what’s going on.”
The Ohio Department of Health (ODH) Zoonotic Disease Program, in partnership with ODH Laboratory, local public health partners and sanitary district partners, collects and tests mosquitoes and ticks from many communities in Ohio as part of statewide vectorborne disease surveillance. This surveillance also includes monitoring for human and veterinary cases as well.
Collections of mosquitoes are identified and tested at ODH Laboratory, while ticks are identified by ODH entomologists. Results from mosquito and tick identification and testing are shared with our partners who use the information to guide public health interventions.
We will monitor for mosquito infections and tick findings throughout the summer and fall and will report positive results and summary statistics on this website, updated each Friday at noon. Please download the attached document for a more detailed summary of mosquito and tick surveillance in Ohio.
As of July 3, 2019
* Ohioans traveling to areas where local transmission is occurring should be aware of the ongoing situation and make every effort to avoid mosquito bites. Additional information can be found from the Centers for Disease Control and Prevention (CDC)’s Travelers’ Health and Pan-American Health Organization websites.
Who are we?
This study is conducted by researchers from Columbia University and the University of Wisconsin – Madison, members of the CDC Regional Centers for Excellence in Vector-Borne diseases. Funding for this study is provided by the Centers for Disease Control.
What is the study about?
In two words, Lyme disease. Lyme disease can be transmitted to humans after a tick bite. This study is designed to help us understand more about how people’s practices and activities impact their exposure to ticks. This research is being done because Lyme disease is the most common vector-borne disease (infections transmitted by the bite of infected arthropod species, such as mosquitoes, ticks, sandflies, etc) in the United States. The information provided will help us design integrated control strategies to prevent diseases transmitted by ticks.
Why is my participation important and how is the app useful to me?
If you live in a high-risk area, sharing your experience and perspective with us will help us learn about the risk factors for tick borne disease and design better methods that prevent tick bites and tick-borne disease. We really appreciate your input!
We are also including information that will help you identify the different tick species, ways to prevent tick exposure and other information that will help you understand more about ticks and the diseases they transmit.
How can you help us?
Once you download the app and register for an account, you will be asked to take one enrollment survey that will help us capture your baseline risk of exposure to ticks.
You will then receive a weekly to monthly message to start your tick diary during the high risk months (May to September). The tick diary, or activity report, should take less than a minute to complete. It asks if you or a household member encountered a tick and what you did that day. When you start the tick diary, you will receive a daily reminder until you complete 15 reports.
Also, you can help us by reporting any tick through a quick form built in the app.
If I don’t want to use the app, how can I participate?
You can sign-up in our website and the surveys will be sent to your email. The informational material can also be found in this website
West Nile Virus (WNV)
As of today, 9/17/2018, ODH is reporting 23 human West Nile virus (WNV) cases, including 2 fatalities, and 6 asymptomatic WNV viremic blood donors in Ohio. Additionally, 17 equine cases have been reported from 11 counties. WNV activity in mosquitoes remains high at this time and virus activity has been reported from 64 Ohio counties so far this year. The graph below shows where we are this year with infection rates in mosquitoes compared to 2012, a high WNV activity year (red dashed line), and 2016, a relatively normal WNV activity year (green dotted line):
La Crosse Virus (LAC)
ODH is also reporting 17 La Crosse (LAC) virus cases and 2 unspecified California virus cases. Cases include 12 females and 7 males, ages 3-17, from 13 Ohio counties. The rainfall we’ve had this summer has continuously filled tree holes and containers with water, creating ideal conditions for tree hole mosquitoes (vectors of LAC virus) to breed. For more information about LAC and other arbovirus cases and surveillance data in Ohio, see the current Ohio arbovirus surveillance update at http://www.odh.ohio.gov/arboupdate.
Surveillance season is beginning to wind down, but with continued warm temperatures and active infected mosquitoes, the risk of new infections will continue until we have a hard freeze. In fact, we have several suspect cases under investigation and we continue to receive new reports each week. With this in mind, please continue your community and public education efforts focusing on personal protection and source reduction. For more information, please check out our website at ohio.gov/mosquito or you can call the Zoonotic Disease Program (ZDP) at (614) 752-1029.
You probably have heard about this new tick invasive in the U.S. First detected in late 2017 in NJ. Recent reports are that it is spreading rapidly. See news clips as below:
“For the first time in 50 years, a new tick species has arrived in the United States — one that in its Asian home range carries fearsome diseases.
The Asian long-horned tick, Haemaphysalis longicornis, is spreading rapidly along the Eastern Seaboard. It has been found in seven states and in the heavily populated suburbs of New York City.
For now, the new arrivals are considered a greater threat to livestock.
Known in Australia as bush ticks and in New Zealand as cattle ticks, long-horned ticks can multiply rapidly and suck so much blood from a young animal that it dies.
The longhorn tick is known to carry several diseases that infect hogs and cattle in Asia. So far, ticks examined in the U.S. do not carry any diseases that can infect humans, but the USDA says the insects frequently form large infestations that cause great stress on warm-blooded host animals, reducing its growth and production. A severe infestation can kill the animal due to blood loss.
Officials said female longhorn ticks reproduce asexually and a single tick can reproduce and lay 2,000 eggs after feeding on a host. Cattle, pets, small mammals, birds and humans are all potential hosts.
In 2017, officials discovered the first longhorn tick population in the United States feeding on large numbers of sheep in Mercer County, New Jersey. It has also been found in Arkansas, New York, West Virginia and Virginia. Tests by the National Veterinary Services Laboratory in Ames, Iowa, have confirmed the presence of an Asian — or longhorn — tick on a wild deer in Centre County on Tuesday. It is the first confirmed sighting of the parasite in Pennsylvania.”
(TRENTON) – New Jersey Secretary of Agriculture Douglas H. Fisher today announced the United States Department of Agriculture’s National Veterinary Services Laboratory (NVSL) in Ames, Iowa has confirmed the finding of an exotic East Asian tick, also known as the longhorned tick or bush tick, on a farm in Hunterdon County on November 9. Initial identification was made by the Monmouth County Tick-borne Diseases Lab, located at Rutgers University and the Hunterdon County Division of Health. This tick is not known to be present in the U.S., although there are records of at least a dozen previous collections of this species in the country on animals and materials presented for entry at U.S. ports.
Courtesy of the CDC Morbidity and Mortality Weekly Report Nov 10th, 2017
Amy M. Schwartz, MPH1; Alison F. Hinckley, PhD1; Paul S. Mead, MD1; Sarah A. Hook, MA1; Kiersten J. Kugeler, PhD1 (View author affiliations)
Problem/Condition: Lyme disease is the most commonly reported vectorborne disease in the United States but is geographically focal. The majority of Lyme disease cases occur in the Northeast, mid-Atlantic, and upper Midwest regions. Lyme disease can cause varied clinical manifestations, including erythema migrans, arthritis, facial palsy, and carditis. Lyme disease occurs most commonly among children and older adults, with a slight predominance among males.
Reporting Period: 2008–2015.