Archive for the ‘Ticks’ Category

Seroepidemiological & Molecular Investigation of Spotted Fever Group Rickettsiae & Coxiella Burnetii in Sao Tome Island: A One Health Approach

https://www.ncbi.nlm.nih.gov/pubmed/31231971

Seroepidemiological and molecular investigation of spotted fever group rickettsiae and Coxiella burnetii in Sao Tome Island: A One Health approach.

Abstract

Spotted fever group rickettsiae (SFGR) and Coxiella burnetii are intracellular bacteria that cause potentially life-threatening tick-borne rickettsioses and Q fever respectively. Sao Tome and Principe (STP), small islands located in the Gulf of Guinea, recently experienced a dramatic reduction in the incidence of malaria owing to international collaborative efforts. However, unexplained febrile illnesses persist. A One Health approach was adopted to investigate exposure to SFGR and C. burnetii in humans and examine the diversity of these bacteria in ticks parasitizing domestic ruminants. A cross-sectional human serological study was conducted in Agua Grande district in Sao Tome Island from January to March 2016, and ticks were collected from farmed domestic ruminants in 2012 and 2016. In total, 240 individuals varying in age were randomly screened for exposure to SFGR and C. burnetii by indirect immunofluorescence assay. Twenty of 240 individuals (8.3%) were seropositive for SFGR (4 for Rickettsia africae and 16 for R. conorii) and 16 (6.7%) were seropositive for C. burnetii. Amblyomma astrion were collected exclusively in 2012, as were A. variegatum in 2016 and Rickettsia spp. were detected in 22/42 (52.4%) and 49/60 (81.7%) respectively. Sequence analysis of multiple gene targets from Rickettsia spp. detected in ticks suggests the presence of a single divergent R. africae strain (Sao Tome). While no ticks were found positive for C. burnetii, Coxiella-like endosymbionts were detected in nearly all ticks.

This is the first study in STP to provide serological evidence in humans of SFGR and C. burnetii and additional molecular evidence in ticks for SFGR, which may be responsible for some of the unexplained febrile illnesses that persist despite the control of malaria. Future epidemiological studies are needed to confirm the occurrence and risk factors associated with SFG rickettsioses and Q fever in both humans and animals.

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For more:  https://madisonarealymesupportgroup.com/2019/03/20/rocky-mountain-spotted-fever-is-not-the-only-rickettsiosis/

Great article on SFGR: https://www.galaxydx.com/rickettsia-spp/

C. burnetii:  https://madisonarealymesupportgroup.com/2019/03/28/human-tick-borne-diseases-in-australia/

https://madisonarealymesupportgroup.com/2018/10/18/study-finds-q-fever-rickettsia-typhus-in-australian-ticks-and-people/

https://madisonarealymesupportgroup.com/2018/02/03/understanding-q-fever-risk-to-minnesotans/  Excerpt: 

The CDC reports that 60% of cases are in patients without livestock contact (CDC unpublished data, 2010) and the need for health-care professionals to consider Q fever in the differential diagnosis in patients with a compatible illness, even in the absence of occupational risk or history of direct contact with animal reservoirs.

Supposedly, he United States ended its biological warfare program in 1969. When it did, C. burnetii was one of seven agents it had standardized as biological weapons.  https://en.wikipedia.org/wiki/Coxiella_burnetii

Q Fever can cause acute or chronic illness.

https://www.medscape.com/viewarticle/803800
Excellent video by Alicia Anderson, DVM, MPH on new CDC guidelines for Q Fever

https://madisonarealymesupportgroup.com/2019/06/24/other-arthropod-borne-bacteria-causing-nonmalarial-fever-in-ethiopia/  African patients presenting with fever but testing negative for malaria had DNA for these pathogens: Borrelia spp., Francisella spp. Rickettsia spp. and Bartonella. Thus, in this rural area of Africa, febrile symptoms could be due to bacteria transmitted by arthropods.

 

 

 

Researchers at Upstate Medical University Collect CNY Ticks For Testing in a Pilot Study

https://www.localsyr.com/news/local-news/researchers-at-upstate-medical-university-collect-cny-ticks-for-testing-in-a-pilot-study/ News Video Here

Researchers at Upstate Medical University collect CNY ticks for testing in a pilot study

LOCAL NEWS

SYRACUSE, N.Y. (WSYR-TV) — A team of researchers with Thangamani Lab at Upstate Medical University have begun a multi-year pilot project studying the ticks in the Central New York region.

They’re trying to figure out which species of ticks are in the area, what they’re carrying, and how those infections impact a person’s health and their treatment.

“The deer ticks, they transmit 7 different pathogens,” said lead researcher, Saravanan Thangamani. “Almost 60% of ticks collected in Onondaga County are positive for Borrelia burgdorferi. That is the agent for Lyme disease.”

Some of the ticks also carry infections like Powassan virus, Ehrlichia, and Bartonella.

One of the goals of this 3-5 year study is to understand what happens if a tick bites someone when it’s carrying more than one infection.

“Does it make the Lyme disease worse, does it make the Powassan worse, or it doesn’t do neither?” asks Thangamani.

Researchers are also trying to track down the ticks’ path. To do so, they’re asking anyone who gets bit by a tick to mail it in for free testing.

Send us the zip code so we know which zip code has particular pathogen prevalence and then does it change over time,” said Thangamani.

To have a tick tested, put it in a zip-lock bag with a moist towelette with the following information:

  • The date
  • Location
  • If the tick was found on a human or pet
  • Your email

More info:  https://thangamani-lab.com/free-tick-testing

You can mail the tick to:

Thangamani Lab
505 Irving Avenue
Suite 4209
SUNY Center for Environmental Health and Medicine
SUNY Upstate Medical Center
Syracuse, NY 13210
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**Comment**

I called and they stated anyone can utilize their FREE tick testing. 
They will send you the results of what pathogens were found.

Tickpocalypse: The Public Health Crisis Hiding in Plain Sight

https://medium.com/l/ticks

TICKPOCALYPSE

IS A GLOBAL LYME DISEASE PANDEMIC COMING? IT’S ALREADY HERE. LEARN WHAT YOU CAN DO ABOUT IT.
Special Report
“Pandemic” isn’t a word responsible health experts toss around lightly. It refers to an infectious disease that’s run rampant—and it’s near the top of the list of major threats to human health. When pandemics occur, newshounds and public health officials jump on it, alerting the masses (albeit sometimes too slowly). When they don’t, pandemics continue to spread unabated. That’s what’s happening now, according to a growing cadre of experts, with Lyme disease.
The worldwide tick population is exploding, and with it, the incidence of Lyme. The number of confirmed cases of the illness in the U.S. more than doubled in the two decades leading up to 2017, and rose 17% from 2016 to 2017 alone. It’s estimated that 300,000 people contract Lyme each year in the U.S., with victims found not just in traditionally tick-heavy areas like upstate New York and Maine, but in all 50 states and Washington, D.C. Lyme is also on the rise in Europe, Africa, and Asia. If all of that isn’t troubling enough, other tick-borne illnesses, like Rocky Mountain Spotted Fever—which experts say is significantly more dangerous than Lyme—are also becoming much more widespread.
“Tickpocalypse,” the collection of stories that follows, documents these looming threats, and shows you how to protect yourself and your family. It’s an eye-opening, and hopefully helpful, report.
Click on initial link for the following stories:

Tick, Tick, Tick….

What it’s Like to Have Lyme Disease Forever

Worrying About Worrying About Lyme disease

When Lyme Kills

What it’s Like to be a Creepy-Crawly Field Researcher

Know Your Enemy: The Black Legged Tick

When That Tick Bites

Lyme Prevention 101

The Mouse Cure 

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New York Times’ Story on Lyme Misses the Bull’s Eye

https://www.forbes.com/sites/judystone/2019/07/02/new-york-times-story-on-lyme-misses-the-bulls-eye/

New York Times’ Story on Lyme Misses the Bull’s Eye

July 2, 2019

By Judy Stone, Infectious Disease Specialist

https---specials-images.forbesimg.com-dam-imageserve-597213730-960x0.jpg?fit=scaleThis bull’s eye rash, characteristic of Lyme disease, may be seen in fewer than half of patients. GETTY

An article appeared in this week’s New York Times, “My Son Got Lyme Disease. He’s Totally Fine. Horror stories about lingering Lyme disease proliferate, but the illness is easily treated.” While I am delighted that author Apoorva Mandavilli’s son had a good outcome, I feel a need to respond to aspects of the story that I, a Board Certified Infectious Diseases physician who lives in a Lyme endemic area and has had Lyme, found misleading and disturbing.

Neither the author’s experience—nor that of the pediatrician she quotes as “never had a complication from Lyme—matches mine. Mandavilli says, “many people view Lyme — wrongly — as a debilitating, chronic illness instead of what it is: An easily treated infection with no long-term consequences for children, or even the vast majority of adults.

I understand that there are a spectrum of patients with Lyme.

I’ve cared for a number of patients with Lyme disease hospitalized with serious complications, including arrhythmias, arthritis, and neurologic symptoms. Occasionally, patients get pacemakers needlessly because the cardiologist does not consider Lyme. Pacemakers are not without their own complications, including life-threatening heart infections.

At the other end of the spectrum, I’ve had some patients, even without confirmatory lab results, who demanded months of IV antibiotics for their symptoms, which may or may not have been due to Lyme. As I would not do, presumably they went to someone else who considered themselves more “Lyme literate” than I, and who went along.

And I had one memorable patient, treated for months with IV ceftriaxone, for what proved to be ALS (amyotrophic lateral sclerosis), a fatal neurologic disease. A different neurologist chided me for taking away the patient’s hope.

Mandavilli, according to her responses to some comments on Twitter, was aiming to reassure parents that most Lyme was benign.

Antibiotics for Lyme

While I likely erred on the side of treating Lyme too conservatively, not wanting to cause more harm with antibiotics, my thinking has evolved some over time. We are learning more about persisting states of Borrelia, the bacteria that causes Lyme. When I spoke a few years ago with Dr. Sam Donta, he had some interesting, thought-provoking hypotheses. He also treated his patients with months of oral antibiotics and Plaquenil, focusing on the intracellular persister bacteria.

Some of Mandavilli’s points were valid, but still off target. The author notes she gave her son a month of doxycycline plus an antacid. I hope that she was careful with the timing, as antacids containing magnesium, aluminum, or calcium make the antibiotic less effective. Recommendations are to take the doxycycline “2 hours before or 6 hours after taking antacids, calcium supplements, and laxatives containing magnesium.” Similarly, vitamin products that contain iron need to be staggered with the antibiotic dosing.

Mandavilli correctly notes that “monthlong course of antibiotics can disrupt the gut microbiome” but she adds “and cause temporary stomach problems.” I guess she’s not seen people lose their colons due to C. difficile colitis, or die of sepsis from that colitis as I have.

My biggest criticisms relate to diagnoses and prevention. Lyme may be readily treated if caught early.

But her child’s physicians missed even thinking of the diagnosis, even though she was in an endemic area and son Akash had a new arthritis of his knee, a classic symptom of Lyme. Lyme should have been a much higher consideration than “juvenile arthritis or any of a long list of autoimmune disorders” his physicians entertained.

Reader Daphne commented in the Times, “The disease IS easily treatable in it’s early stages. The problem is that it IS NOT easily diagnosed. The basis of questioning in the article should not be “What are people so worried about?” Rather, it should be, “How can we assure early detection of Lyme is the norm for everyone?”

With an estimated 300,000 new cases of Lyme each year in the US, and the Tick-Borne Disease Working Group 2018 reporting that “10 to 20% of patients suffer from persistent symptoms, which for some are chronic and disabling,” it is important not to trivialize the disease.

Lack of accurate diagnostic tests

One of the biggest problems with Lyme, besides our lack of knowledge about it, is that we don’t even have good definitions of disease nor do we have any decent diagnostic tests. No definitive biomarker exists either for B. burgdorferi  or for PTLDS (post-treatment Lyme disease syndrome).

This difficulty in getting a diagnosis is not unique to Lyme. It is common for patients (especially women) with vague symptoms such as fatigue, difficulty concentrating, or joint pain to go years without a diagnosis. Too many patients have rare diseases or autoimmune overlap diseases and it often takes five years and visits to an average of 7.3 physicians to make a diagnosis. Even for something that should have been fairly straightforward, it took me more than 10 physicians over a long time to have a torn cartilage in my wrist diagnosed—because it is an relatively unusual problem and because I was a woman, doctors refused to take my history seriously.

Diagnosing Lyme is difficult unless the symptoms are “classic.” It’s even worse for PTLDS, although John Aucott and Johns Hopkins researchers are beginning to tease out differences from controls. Lorraine Johnson, CEO of LymeDisease.org argues that the term PTLDS should be eliminated, as it is based on fulfilling the surveillance case definition of the CDC, and should not be used clinically. Lyme tests with the two-tier testing are antiquated and miss too many patients. The tests are generally negative in the first month after a bite, as they are based on the patient developing antibodies to infection. A corollary is that if the patient has taken antibiotics for the bite, they may not develop antibodies at all. The two-tier testing is quite specific, meaning it is unlikely that the patient will have a falsely positive test—at the expense of overlooking many.

Prevention

Not only did Mandavilli miss her mark in terms of being reassuring, I believe she did a huge disservice by minimizing Lyme disease and, by extension, the need for rigorous preventative measures and personal protection. I stress that aspect in my writing and patient care, since I’ve seen such serious complications. If parents think Lyme is a trivial illness, they are unlikely to go to the trouble of treating clothes, shoes and socks with permethrin, using insect repellents, or doing meticulous tick checks after outdoor adventures. This is critically important. Tiny, deer ticks transmit not only Lyme, but a host of other nasty infections, including ehrlichiosis, anaplasmosis, babesiosis, and Powassan virus. The latter can be deadly even if the tick has only been feeding for less than an hour. I say this not for scare-mongering, but to counter the impression the NYTimes article likely left many that tick bites are no big deal. They failed their millions of readers with this post.

Be active, go outdoors, but take precautions would be a safer message.

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**Comment**

A fairly balanced article by an infectious disease specialist.  I think I’m going to faint….

Please note:While I likely erred on the side of treating Lyme too conservatively…”

I would hate to be in a doctor’s shoes when the science finally catches up to the times. I think there’s going to be a lot of regret & guilt.

Regarding getting the EM rash, the percentages vary wildly from 25%-80%, but hardly a symptom that should be used as any sort of standard for anything. If you have it, you have Lyme, but even if you don’t have it, you can still have Lyme: https://madisonarealymesupportgroup.com/2019/02/22/why-mainstream-lyme-msids-research-remains-in-the-dark-ages/

For more:  https://madisonarealymesupportgroup.com/2019/07/01/touched-by-lyme-singing-from-the-idsa-lyme-hymnal/

https://www.lymedisease.org/nyt-article-raw-nerve-lyme/

On the Lyme War Path – Chick2Chick

 Approx. 14 Min

PennWatch

Published on Jun 30, 2019

Watch out!!! Carrie Perry from @Chick2Chick is on a warpath. She now has 2 daughters diagnosed with Lyme Disease, both missed by her primary care doctor.
Carrie and Flora Posteraro chirp about that and the many ways to protect you and your family against tick bites. #podcast #letschirp #realtalk #womensvoices
You can also listen to this as a podcast at your convenience through your favorite online podcast directory – iTunes, Stitcher, Spotify, TuneIn, Podbean or Google Play.
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Wisconsin desperately needs FREE tick testing.  Call your reps and tell them.

You have to remember that tick testing isn’t perfect and can miss things but it’s a place to start & that it only follows that since ticks are filled with many pathogens, people will be too.