Archive for the ‘Ticks’ Category

Integrated Tick Management Reduces Ticks by 93% Study Finds

https://www.ncbi.nlm.nih.gov/pubmed/31853763

2019 Dec 18. doi: 10.1007/s10493-019-00452-7. [Epub ahead of print]

Evaluating the effectiveness of an integrated tick management approach on multiple pathogen infection in Ixodes scapularis questing nymphs and larvae parasitizing white-footed mice.

Abstract

We investigated the effectiveness of integrated tick management (ITM) approaches in reducing the burden of infection with Borrelia burgdorferi, Babesia microti, and Anaplasma phagocytophilum in Ixodes scapularis. We found a

  • 52% reduction in encountering a questing nymph in the Metarhizium anisopliae (Met52) and fipronil rodent bait box treatment combination as well as a
  • 51% reduction in the combined white-tailed deer (Odocoileus virginianus) removal, Met52, and fipronil rodent bait box treatment compared to the control treatment.
  • The Met52 and fipronil rodent bait box treatment combination reduced the encounter potential with a questing nymph infected with any pathogen by 53%.
  • Compared to the control treatment, the odds of collecting a parasitizing I. scapularis infected with any pathogen from a white-footed mouse (Peromyscus leucopus) was reduced by 90% in the combined deer removal, Met52, and fipronil rodent bait box treatment and by
  • 93% in the Met52 and fipronil rodent bait box treatment combination.
Our study highlights the utility of these ITM measures in reducing both the abundance of juvenile I. scapularis and infection with the aforementioned pathogens.

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For more:  https://madisonarealymesupportgroup.com/2019/04/12/tick-prevention-2019/

https://madisonarealymesupportgroup.com/2019/07/18/frequent-prescribed-fires-can-reduce-risk-of-tick-borne-diseases/

https://madisonarealymesupportgroup.com/2018/04/03/fire-good-news-for-tick-reduction/

https://madisonarealymesupportgroup.com/2018/05/27/study-conforms-permethrin-causes-ticks-to-drop-off-clothing/

https://madisonarealymesupportgroup.com/2019/06/16/study-shows-effectiveness-of-factory-treated-permethrin-impregnated-clothing-works/

https://madisonarealymesupportgroup.com/2019/08/09/military-eyes-bug-repellent-coating-to-replace-permethrin-in-uniforms/

 

After 4 Painful Years, CNY Woman’s Mystery Illness Finally Traced to Rare Tick-borne Bacteria (which isn’t rare)

https://www.syracuse.com/health/2019/12/after-four-painful-years-a-cny-womans-mystery-illness-finally-solved.html

After 4 painful years, CNY woman’s mystery illness finally traced to rare tick-borne bacteria

Rare tick borne disease ravaged young woman’s health

“It was like the flu, but for only four days straight,” recalled Allyn, 22, of Skaneateles. “They would test for strep, they would test for mono, and everything would be negative. We thought it was just some weird virus.”

Every few months, the fever returned and disappeared after four days. Until the fall of 2017, when Allyn was a junior at Colgate. This time, the fever stayed, and brought along fatigue and excruciating pain in her joints and muscles.

“You know when you have the flu and your body aches? It was like that times a million,” said Allyn, who was a runner in high school. “I was an extreme athlete, and I couldn’t walk up my stairs to my room anymore. We could tell something was terribly wrong.”

The quest to understand what was wrong, and how to cure it, has consumed Allyn’s life. Since that first fever, Allyn has suffered severe migraines, tingling in her arms and legs that felt like bugs crawling beneath her skin, extreme fatigue, heart palpitations, shortness of breath so constricting that she gasped for air after a flight of stairs, inability to concentrate, and anxiety attacks that convinced her she was dying.

Allyn has seen neurologists, Lyme disease specialists, acupuncturists and chiropractors. She’s been diagnosed with strep throat, chronic fatigue syndrome and Lyme disease. She took dozens of supplements and antibiotics, drank celery juice every morning for four months, and even shut herself inside a claustrophobic hyperbaric chamber in Florida.

Nothing worked.

No one could understand what had turned a star high school athlete into a young woman so sick she couldn’t climb the 10 stairs to her childhood bedroom, or why she wasn’t getting better.

“Those are the darkest days, when you’re trying everything and nothing is working,” said Allyn’s mother, Meg O’Connell. “As a parent you want to shake the doctors and say, ‘You have to take care of my child right now!’”

Finally, this summer, Allyn got a definitive answer. She was diagnosed as one of the first two people in Central New York to contract an emerging tick-borne disease called miyamotoi.

Miyamotoi is so new that, unlike Lyme disease, it doesn’t have a common name, but is referred to simply the species of the bacterium that causes it. It’s in the same genus as the Lyme bacterium, but is more closely related to a group of diseases known as tick-borne relapsing fever.

Tick populations are increasing in Upstate New York, and they are bringing debilitating disease to tens of thousands of people. If it wasn’t bad enough that deer ticks already carried six bacteria and viruses, they and miyamotoi have now evolved to add a new weapon to the arsenal.

Miyamotoi infections were first found in humans in 2011 and confirmed in the Northeast in 2013. Scientists are still studying how it’s transmitted, and many doctors are unfamiliar with the disease, said Brian Leydet, a professor and tick expert at SUNY College of Environmental Science and Forestry, in Syracuse.

“That’s what’s terrifying about it: knowing so little about it, and it’s in our back yard,” Leydet said.

Like many people suffering from tick-borne diseases, Allyn doesn’t remember being bitten. She suspects she picked up the tick while hiking or running trails, and that it hid beneath her long blond hair. Ticks seek out hard-to-see places on the body, like the scalp or behind the knees, and then attach to the skin for 24 to 48 hours, sucking blood and disgorging pathogens.

Allyn also doesn’t remember the date of the first fever, but she lucidly recalls the day the illness took over her life: Oct. 6, 2017, a date she mourns each year. She was walking down the long hill from Colgate to the village of Hamilton when she was overcome with pain and massive fatigue.

“I had to sit down because I didn’t think I could walk the rest of the way home,” she recalled. “I was just having shooting pain all through my muscles and knees and elbows. It felt like everything was breaking in my body.”

She couldn’t focus enough to drive, so her parents brought her home to Skaneateles. She saw a nurse practitioner in Syracuse whom Allyn had worked for, Carolyn Christie-McAuliffe. She drew 30 vials of blood, Allyn recalled.

Allyn returned to Colgate, hoping it was just a case of mononucleosis that would go away so she could finish her junior year. Then the test results came in. The first one, Allyn recalled, counted the markers of inflammation in her body.

“The normal range is about 40 to 60. Mine was 800,” she said. “Carolyn called me and said, ‘You have to go home immediately. Something is really wrong.’”

Allyn took a medical leave from Colgate and returned home yet again. Three days later McAuliffe called with a diagnosis: Lyme disease. There was something odd about the test results, though, that would later become an important clue. While the initial screening test was positive for Lyme, the confirmatory test, called the Western blot, was abnormal, but negative for Lyme, Allyn said.

Allyn went on a four-week course of doxycycline, the standard regimen for Lyme patients. She only felt worse; now the disease was enveloping her brain in a fog.

“I would wake up every morning and not remember what I did,” she recalled. “I’d be watching a TV show I’d been watching for years and I wouldn’t know what was happening. I couldn’t read because I couldn’t concentrate, and I couldn’t really understand words. Most of the days I would lay awake in bed staring at the wall.”

The shattering knee and elbow pain returned. She had “horrible migraines.” She was short of breath and her heart started skipping beats. Her legs and arms tingled with pins and needles. Sitting home alone, Allyn developed paranoia and panic attacks, calling her parents in the middle of the day to say she was dying.

O’Connell remembers her own pain watching her daughter’s.

“It’s just so sad to see someone struggle for two-plus years,” said O’Connell, executive director of the Allyn Foundation. “When you have an ill child, you just want to take that burden from them. You ask, ‘Why couldn’t that have happened to me instead?’”

O’Connell had joined the CNY Lyme and Tick-Borne Disease Alliance. At an early meeting of the alliance, O’Connell met Dr. Kris Paolino, a new physician at Upstate Medical University who specialized in Lyme cases. Paolino, an infectious disease specialist, had helped develop vaccines for Ebola and malaria at the Walter Reed Army Institute of Research in Washington, D.C.

“I happened to say to him that my daughter has Lyme and we can’t get rid of these fevers,” O’Connell recalled. “He said, ‘Make an appointment and come see me.’”

At that first appointment, Allyn recounted her frustrating and painful journey.

“The main thing I try to do is to listen to the patient’s story first,” said Paolino, hired in 2016 as part of Upstate’s battle against the growing threat of tick-borne disease. “In many cases you’re trying to figure out what’s real and what’s not.”

As Allyn’s story unfolded, Paolino noted the clues that raised doubt about the Lyme diagnosis: the relapsing fevers, the neurological symptoms, and that ambiguous Western blot test.

Those suggested miyamotoi. Another round of tests confirmed it.

“I’m not sure if she had ever had Lyme,” Paolino said. “I think it was probably miyamotoi all this time.”

It’s not hard to understand why doctors would suspect Lyme over miyamotoi. The abnormal Western blot test result after a positive Lyme test can be confounding, and miyamotoi is almost unheard of. Just 10 cases of miyamotoi were reported to the state health department from 2001 to 2016, compared to nearly 80,000 cases of Lyme disease.

Paolino said he has now four miyamotoi patients.

“I think there’s probably more people that are undiagnosed than we think,” he said. “It is a fairly new emerging pathogen in the region.”

Paolino prescribed an intense regimen of intravenous antibiotics for Allyn. First doctors inserted a thin tube that ran from Allyn’s upper right arm to her heart. Every night for seven weeks, she said, she spent a half hour pumping two syringes of the antibiotic ceftriaxone into the tube.

The treatment seems to be helping, Allyn and O’Connell said.

“As Dr. Paolino said, ‘Don’t go out and run a marathon yet,’ but we have been really encouraged,” O’Connell said. “She has not had a fever, her blood work is better, her glands are not swollen. She can take longer walks. It will still be another six to 12 months to build up her body because all of it’s been through, but I would say we’re hopefully optimistic.”

No one knows yet if Allyn is cured, what damage the years of treatments might have caused, or if her symptoms will linger even if the bacteria are gone. Paolino said there’s reason for optimism because relapsing fever diseases similar to miyamotoi can be cured by antibiotics. Miyamotoi is so new, however, there’s little research on how patients fare if the disease has been left untreated for years.

“The longer the symptoms are present, you see more damage to the nerves and more damage to the joints that could be more of an irreversible process,” Paolino said. “The hope is that she’ll continue to feel well and she won’t relapse, but I don’t have a definitive answer.”

Fatigue remains a constant presence, Allyn said, but she is slowly regaining strength. She can take her 8-month-old German shepherd, Oaklie, for two walks a day now. She has been attending Colgate part-time, and can do homework in the morning before she gets too tired.

“I’ve gotten a little bit better, but how much better will I get?” she wonders.

It’s time, she said, to find out. On Saturday, she and her boyfriend moved to Boulder, Colorado, where Allyn has an aunt and uncle. She plans to complete her Colgate degree in education and cellular neuroscience by taking her final three classes at the University of Colorado. She’s not ready for a 9-to-5 job, and doesn’t know when she will be, but she hopes to start part-time in a café or bakery. And as she gets stronger, Allyn hopes to put on skis and hiking boots again.

“Life is so short and you could get sick any day,” she said. “Why not go for a hike or go skiing?”

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For more:  https://madisonarealymesupportgroup.com/2018/08/17/borrelia-miyamotoi-found-to-occur-nationwide-in-japan/

https://madisonarealymesupportgroup.com/2018/02/15/b-miyamotoi-in-ca-ticks-for-a-long-time/The following article explains that Borrelia Miyamotoi is not new to California.  

First considered nonpathogenic, it wasn’t even reported until 2011 in Russia.  http://www.nejm.org/doi/full/10.1056/NEJMc1215469  Diagnosis relies on PCR testing during acute infection and two-tiered testing for Lyme will not pick it up. 

It is not a reportable illness so prevalence is pure conjecture.  

Dr. Horowitz states clinicians should be vigilant for clinical pictures that look like viral infections such as high fever, headache, and muscle and joint pain.  

In publications, only 16% of patients presenting with BMD were seropositive for IgG and/or IgM antibody to B. miyamotoi rGlpQ, so PCR should also be considered in patients with a history of tick bites and appropriate clinical manifestations.

This is also an important reminder that new strains and species are being discovered continually, so nothing about Tick Borne Illness should be set in stone and open minds are a must.

https://madisonarealymesupportgroup.com/2018/02/14/borrelia-miyamotoi-in-ca-serodiagnosis-is-complicated-by-multiple-endemic-borrelia-species/ (Study found here)

https://www.lymedisease.org/lyme-sci-study-finds-lots-b-miyamotoi-california-ticks/  

 

Immunosuppressive Proteins Found in Tick Saliva – In Every Life Stage

https://www.ncbi.nlm.nih.gov/pubmed/31734217

2019 Nov 10:101332. doi: 10.1016/j.ttbdis.2019.101332. [Epub ahead of print]

Immunosuppressive effects of sialostatin L1 and L2 isolated from the taiga tick Ixodes persulcatus Schulze.

Abstract

Tick saliva contains immunosuppressants which are important to obtain a blood meal and enhance the infectivity of tick-borne pathogens. In Japan, Ixodes persulcatus is a major vector for Lyme borreliosis pathogens, such as Borrelia garinii, as well as for those causing relapsing fever, such as B. miyamotoi. To date, little information is available on bioactive salivary molecules, produced by this tick. Thus, in this study, we identified two proteins, I. persulcatus derived sialostatin L1 (Ip-sL1) and sL2 (Ip-sL2), as orthologs of I. scapularis derived sL1 and sL2. cDNA clones of Ip-sL1 and Ip-sL2 shared a high identity with sequences of sL1 and sL2 isolated from the salivary glands of I. scapularis. Semi-quantitative PCR revealed that Ip-sL1 and Ip-sL2 were expressed in the salivary glands throughout the life of the tick. In addition, Ip-sL1 and Ip-sL2 were expressed even before the ticks started feeding, and their expression continued during blood feeding. Recombinant Ip-sL1 and Ip-sL2 were developed to characterize the proteins via biological and immunological analyses. These analyses revealed that both Ip-sL1 and Ip-sL2  had inhibitory effects on cathepsins L and S. Ip-sL1 and Ip-sL2 inhibited the production of IP-10, TNFα, and IL-6 by LPS-stimulated bone-marrow-derived dendritic cells (BMDCs). Additionally, Ip-sL1 significantly impaired BMDC maturation. Taken together, these results suggest that Ip-sL1 and Ip-sL2 confer immunosuppressive functions and appear to be involved in the transmission of pathogens by suppressing host immune responses, such as cytokine production and dendritic cell maturation. Therefore, further studies are warranted to investigate the immunosuppressive functions of Ip-sL1 and Ip-sL2 in detail to clarify their involvement in pathogen transmission via I. persulcatus.

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For more:  https://madisonarealymesupportgroup.com/2019/08/14/what-tick-saliva-does-to-the-human-body/

https://madisonarealymesupportgroup.com/2018/01/20/potential-medical-adhesive-tick-saliva/

https://madisonarealymesupportgroup.com/2019/04/26/three-strains-of-borrelia-other-pathogens-found-in-salivary-glands-of-ixodes-ticks-suggesting-quicker-transmission-time/

https://madisonarealymesupportgroup.com/2018/12/28/relapsing-fever-spirochete-uniquely-adapted-to-highly-oxidative-salivary-glands-of-soft-bodied-tick/

https://madisonarealymesupportgroup.com/2019/07/29/how-quickly-can-an-attached-tick-make-you-sick/

https://madisonarealymesupportgroup.com/2019/11/19/to-milk-a-tick/

https://madisonarealymesupportgroup.com/2018/05/22/mosquito-spit-alone-may-significantly-alter-your-immune-system-for-days-after-a-bite/

Patterns, Drivers, and Challenges of Vector-Borne Disease Emergence

https://www.liebertpub.com/doi/10.1089/vbz.2018.2432

Vector-Borne and Zoonotic DiseasesAhead of Print

Patterns, Drivers, and Challenges of Vector-Borne Disease Emergence

Andrea Swei, lisa I. Couper, Lark L. Coffey, Durrell Kapan, and Shannon Bennett

Published Online:https://doi.org/10.1089/vbz.2018.2432

Vector-borne diseases are emerging at an increasing rate and comprise a disproportionate share of all emerging infectious diseases. Yet, the key ecological and evolutionary dimensions of vector-borne disease that facilitate their emergence have not been thoroughly explored. This study reviews and synthesizes the existing literature to explore global patterns of emerging vector-borne zoonotic diseases (VBZDs) under changing global conditions. We find that the vast majority of emerging VBZDs are transmitted by ticks (Ixodidae) and mosquitoes (Culicidae) and the pathogens transmitted are dominated by Rickettsiaceae bacteria and RNA viruses (Flaviviridae, Bunyaviridae, and Togaviridae). The most common potential driver of these emerging zoonoses is land use change, but for many diseases, the driver is unknown, revealing a critical research gap. While most reported VBZDs are emerging in the northern latitudes, after correcting for sampling bias, Africa is clearly a region with the greatest share of emerging VBZD. We highlight critical gaps in our understanding of VBZD emergence and emphasize the importance of interdisciplinary research and consideration of deeper evolutionary processes to improve our capacity for anticipating where and how such diseases have and will continue to emerge.

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**Comment**

Regarding ticks, it’s birds that are doing the damage:  https://madisonarealymesupportgroup.com/2017/08/17/of-birds-and-ticks/

Excerpt:

But birds facilitate the spread of ticks, picking them up in Maryland, Connecticut and other eastern states as they fly north in the spring, Lubelczyk explained.

“As they’re migrating, they’re either dropping the ticks off as they fly or when they land. They’re kind of seeding them along migration patterns.

https://madisonarealymesupportgroup.com/2016/10/02/the-role-of-birds-in-tickborne-illness/

Excerpt:

Birds play a central role in the ecology of tick-borne pathogens. They expand tick populations and pathogens across vast distances and serve as reservoirs that maintain and amplify transmission locally.

 

Bracing for the Worst – Range Expansion of the Lone Star Tick in the Northeastern United States

https://www.nejm.org/doi/full/10.1056/NEJMp1911661?

Perspective

Bracing for the Worst — Range Expansion of the Lone Star Tick in the Northeastern United States

List of authors.

  • Goudarz Molaei, Ph.D.,
  • Eliza A.H. Little, Ph.D.,
  • Scott C. Williams, Ph.D.,
  • and Kirby C. Stafford, Ph.D.

Ticks and tickborne diseases are increasingly becoming a major health concern for humans, domesticated animals, and livestock. Reported cases of bacterial and protozoan tickborne disease doubled in the United States between 2004 and 2016. More than 90% of the nearly 60,000 cases of nationally notifiable vectorborne diseases reported in 2017 were linked to ticks. As the geographic ranges of multiple tick species continue to expand, invasive tick species are being discovered, new tickborne pathogens are emerging, and coinfections in ticks are surging. Rising global temperatures, ecologic changes, reforestation, and increases in commerce and travel are all important underlying factors influencing the rate and extent of range expansion for ticks and tickborne pathogens.

Both blacklegged (Ixodes scapularis) and lone star (Amblyomma americanum) ticks may be recolonizing areas where they thrived historically, before rampant deforestation and substantial local reduction of key hosts. Linked, in part, to a warming climate, there has been an increase in the number of ticks and associated diseases recorded in the United States and Canada,1 as well as in Europe.

Persistently warming temperatures may not only lead to the continued geographic range expansion of some ticks but may also extend their active season, thereby altering host availability and abundance; interactions among vectors, pathogens, and hosts; and the prevalence of infection in ticks. A warming climate and other environmental changes will affect abundance, distribution, seasonal activity patterns, and interactions among species differently for various ticks.

Lone star ticks of all life stages (larva, nymph, and adult) feed predominantly on large mammals, especially white-tailed deer. Larvae and nymphs also feed on birds. The resurgence of lone star ticks is linked to increased populations of deer, eastern coyotes, and wild turkeys. In addition to occupying its established range, the lone star tick has expanded into the upper midwestern and northeastern United States and eastern Canada.2,3 Since lone star ticks can lay several thousand eggs, even the dispersal of a small number of gravid females may be sufficient to establish populations in areas with abundant reproductive hosts, suitable habitats, and conducive temperatures.

Current Populations of Lone Star Ticks (Amblyomma americanum) in the Northeastern United States.

Lone star ticks have been established in the southeastern United States for well over a century; southern New Jersey was historically recognized as their northern range limit.4 Some reports of lone star ticks in the northeastern United States and more recently in eastern Canada may not necessarily reflect established breeding populations.2,3 In the past few decades, however, documented breeding populations have expanded into some parts of the Northeast. Such populations were reported in Suffolk County, New York, as early as 1971; Newport County, Rhode Island, in 1986; Somerset and Middlesex Counties, New Jersey, in 2017; Fairfield and New Haven Counties, Connecticut, in 2018 and 2019, respectively; and Barnstable, Nantucket, and Dukes Counties, Massachusetts, in 2019 (see map).2,4,5

Current environmental and climatic conditions favor the establishment and expansion of lone star ticks along the southern New England coast. Moderate maritime climates may be more conducive to the establishment of lone star tick populations than the climates inland, areas where immature ticks may not survive cold winters. Investigations of lone star ticks that can be traced back to an established southern population show that adults can successfully survive the winter in mainland Connecticut, however, and population simulations using current climate conditions suggest that southern Canada is already suitable for their establishment. Although the northward range expansion of the lone star tick is consistent with climate change, a recent study revealed that tick populations in New York are genetically distinct from those occupying the species’ historical range. This finding suggests the possibility of adaptive evolution causing or coinciding with this range expansion and probably favoring pathogen transmission.

It’s unclear how the lone star tick will compete and interact directly or indirectly with other tick species in the Northeast, and the nature of these interactions may vary depending on evolutionary context and changing environmental and climatic conditions. In the southeastern United States, range expansion of the lone star tick coincided with diminished populations of the American dog tick (Dermacentor variabilis). In New Jersey, populations of the lone star tick have increased in areas where it is endemic while blacklegged tick populations have remained static.4 Field studies indicate that the lone star tick establishes populations in habitats with specific humidity ranges and that tick abundance is associated with the presence of invasive plants. Areas colonized by invasive plants are frequented by white-tailed deer, a prominent tick host and pathogen reservoir. Lone star ticks will traverse long distances when searching for a mammalian host, thereby accelerating their establishment in new areas.2

Previously considered aggressive nuisance pests, lone star ticks have now been associated with several human diseases and medical conditions, including tularemia (Francisella tularensis), ehrlichiosis (Ehrlichia chaffeensis, E. ewingii, and Panola Mountain Ehrlichia), Heartland virus disease (Heartland virus), southern tick–associated rash illness, or STARI (pathogen unknown), and red meat allergy (alpha-gal syndrome) and are probably also associated with Bourbon virus disease (Bourbon virus).2 Lone star ticks have also been commonly found to be infected with Rickettsia amblyommatis; however, serologic evidence suggests that humans develop a robust immune response to this bacterium, though it may cause symptoms in some people. Local abundance of lone star ticks and the likelihood of getting multiple bites can be highly irritating, even in the absence of disease transmission.

Although lone star ticks don’t transmit Borrelia burgdorferi — the principal bacterium that causes Lyme disease in North America — symptoms of STARI and early Lyme disease are similar, and STARI may be misdiagnosed as Lyme disease in areas with both lone star ticks and blacklegged ticks. Reported cases of human ehrlichiosis have increased, but this disease is largely underrecognized and underreported. Infections of E. chaffeensis in lone star ticks have been identified in Connecticut, Rhode Island, and Massachusetts, but few cases of human disease have been attributed to this pathogen.

Most reports of lone star ticks in the northeastern United States come from tick submissions by the public to passive surveillance programs, which serve as an early warning system. Active surveillance is important for accurate determination of the extent of the northern range expansion of this vector, however. To be effective, active surveillance should be designed specifically for lone star ticks and should include targeting of areas with emerging populations identified by passive surveillance.3 In many areas of the mid-Atlantic region and emerging areas of the Northeast, coexistence of lone star and blacklegged ticks complicates management strategies. Rodent-targeted approaches used for the control of blacklegged ticks aren’t necessarily effective for lone star ticks, since small mammals aren’t major hosts for immature members of this species. By contrast, application of acaricides to deer by means of four-poster feeding stations has reduced the abundance of host-seeking lone star and blacklegged ticks.

Abundant reproductive hosts, an increasingly hospitable climate, and genetic plasticity of the lone star tick support the continued invasion and establishment of this tick in the Northeast. Increasing population densities and subsequent range expansion, in conjunction with nondiscriminating biting habits and the capacity to transmit diverse pathogens, position the lone star tick as an important emerging health threat to humans, domesticated animals, and wildlife. It’s also plausible that the lone star tick will displace local tick species, transmit different pathogens than those species, and alter the tickborne disease landscape. We believe it’s essential for practitioners and the public to develop a heightened awareness of the health risks associated with emergent tick vectors such as the lone star tick and their potential for changing the dynamics of tickborne diseases in the northeastern United States and elsewhere.

Disclosure forms provided by the authors are available at NEJM.org.

Author Affiliations

From the Department of Environmental Sciences (G.M.), the Center for Vector Biology and Zoonotic Diseases and Northeast Regional Center for Excellence in Vector-borne Diseases (G.M., E.A.H.L., S.C.W., K.C.S.), the Department of Entomology (E.A.H.L., K.C.S.), and the Department of Forestry and Horticulture (S.C.W.), the Connecticut Agricultural Experiment Station, and the Department of Epidemiology of Microbial Diseases, Yale School of Public Health (G.M.) — all in New Haven, CT.

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**Comment**

Despite the articles continual mention of climate change, research has shown this to be a moot point regarding tick proliferation:  https://madisonarealymesupportgroup.com/2018/11/07/ticks-on-the-move-due-to-migrating-birds-and-photoperiod-not-climate-change/

https://madisonarealymesupportgroup.com/2018/08/13/study-shows-lyme-not-propelled-by-climate-change/

What is a problem is the fact birds are transporting ticks everywhere:  https://madisonarealymesupportgroup.com/2019/03/09/danish-study-shows-migrating-birds-are-spreading-ticks-their-pathogens-including-places-without-sustainable-tick-populations/

The weather doesn’t bother ticks at all:  https://madisonarealymesupportgroup.com/2016/01/20/polar-vorticks/  The video in this link shows ticks surviving in 3 degrees overnight under snow cover.  When ticks are threatened they seek out leaf litter, bark mulch, or snow cover.

 Southern advocates tell me STARI IS LYME.  The symptoms are one and the same.

Also, please note the authors in one breath want to say the climate keeps Lone Star ticks in certain areas and then in another breath they say they are moving everywhere – including Canada.  Which is it?  You can’t have it both ways.

It is my opinion, which has been substantiated by a tick researcher, that many researchers are using the climate change moniker for grand money because it’s a hot topic.  This is important as there are only so many research dollars available and it’s high time we start having unbiased, accurate research that helps suffering patients.  More climate data is NOT going to do that.