Archive for the ‘Transmission’ Category

More Than Lyme: Tick Study Finds Multiple Agents of Tick-borne Diseases


More than Lyme: Tick study finds multiple agents of tick-borne diseases




In a study published in mBio, a journal of the American Society for Microbiology, Jorge Benach and Rafal Tokarz, and their co-authors at Stony Brook University and Columbia University, reported on the prevalence of multiple agents capable of causing human disease that are present in three species of ticks in Long Island.

Tick-borne diseases have become a worldwide threat to public health. In the United States, cases more than doubled, from 22,000 in 2004 to more than 48,000 in 2016, according to the U.S. Centers for Disease Control. Tick-borne diseases range from subclinical to fatal infections with disproportionate incidence in children or the elderly. Moreover, some infections can also be transmitted by blood transfusions and cause severe disease in patients with underlying disorders. While public attention has focused on Lyme disease, in recent years, scientists have uncovered evidence that ticks can carry several different pathogens capable of several different tick-borne diseases, sometimes in a single tick.

In the new study, researchers collected ticks from multiple locations throughout Suffolk county in the central and eastern part of Long Island, where seven diseases caused by microbes transmitted by ticks are present. In total, they examined 1,633 individual ticks for 12 separate microbes. They found that more than half of the Ixodes (deer ticks) were infected with the Lyme disease agent, followed by infections with the agents of Babesiosis and Anaplasmosis. Importantly, nearly one-quarter of these ticks are infected with more than one agent, resulting in the possibility of simultaneous transmission from a single tick bite.

Notably, the lone star tick, a species originating from the southern U.S., has expanded its range, possibly fueled by climate change. This study documents that the invasive lone star tick is abundant in Long Island, and that it is a very aggressive tick that can transmit a bacterium that causes a disease known as Ehrlichiosis. The lone star tick has also been implicated in cases of a novel form of meat allergy, and the immature stages can cause an uncomfortable dermatitis.

Polymicrobial infections represent an important aspect of tick-borne diseases that can complicate diagnosis and augment disease severity,” says corresponding author Jorge Benach, PhD, Distinguished Professor at the Department of Microbiology and Immunology at the Renaissance School of Medicine at Stony Brook University. “Some of the polymicrobial infections can be treated with the same antibiotics, but others require different therapies, thus enlarging the number of drugs to treat these infections.”

“In evaluating tick-borne infection, more than one organism needs to be considered,” says senior author Rafal Tokarz, PhD, assistant professor of epidemiology in the Center for Infection and Immunity at the Columbia Mailman School of Public Health, and a graduate of the Department of Microbiology and Immunology at Stony Brook University. “This study emphasizes the need to focus on all tick-borne diseases, not just Lyme.”


The first author is Santiago Sanchez, a post-doctoral fellow in the Department of Microbiology and Immunology at Stony Brook University. Teresa Tagliafierro from Columbia and James Coleman from Stony Brook are co-authors of the study.

This study was funded by a grant from the National Institutes of Health to Benach. Support was also provided by the Island Outreach Foundation in Blue Point, NY, to the Stony Brook Renaissance School of Medicine. Support from the Steven & Alexandra Cohen Foundation (CU18-2692) was provided to Tokarz.


Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.



Again, climate change has nothing to do with tick proliferation and disease spread:  Dr. Patrick Michaels, director of the Center for the Study of Science at the Cato Institute, provides insight into the debate over climate change and the political games played to create policy.

Political games surrounding Lyme/MSIDS have gone on long enough. Do research on important issues that will help patients.




Keep an Eye Out For Bartonella

By Galaxy Lab

written on September 4, 2019

Keep an “Eye” Out for Bartonella Infections

Patients with Bartonella species infection (bartonellosis) complain of a variety of nonspecific vision problems that can affect every function of the eye. Making diagnosis and treatment decisions even more difficult, these problems can be caused by a variety of other pathogens and diseases. Fortunately, many peer-reviewed case publications, especially in ophthalmology journals, are available that describe both common and uncommon eye symptoms caused by bartonellosis.

Documented links between Bartonella species infection and vision problems focus on Bartonella henselae (cat scratch disease) and Bartonella quintana (trench fever). B. henselae is associated with contact with animals and vectors, especially cats and fleas, while B. quintana is associated with body lice. Additional species implicated include B. elizabethae and B. grahamii.


The eye consists of structures that focus light on nerve receptors at the back of the eye, nerves that feed into the optic nerve which connects to the brain, and a blood supply that connects through a central artery and vein into the body’s blood circulation. Bartonellosis can affect each of these parts of the eye.

    A diagram of the eye (Source: NIH).

Patients with bartonellosis-related eye problems may have symptoms in other organs as well that can help clarify whether the eye symptoms are caused by bartonellosis. Ophthalmologists and other physicians look for these additional signs because all of the eye conditions that can be caused by bartonellosis can be caused by a variety of bacteria and viruses, as well as other health conditions including autoimmune disorders.

It can be difficult to narrow down the possible causes of bartonellosis. Sometimes patients can’t remember any events that would have exposed them to Bartonella species. Other times the event, such as a cat scratch, may have occurred weeks to a month or more before symptoms appear and the patient may not think there is a connection. It can take detailed questioning by physicians to identify the possibility of Bartonella species exposure.

Structural Eye Symptoms

The most common way bartonellosis is seen in the eye is called Parinaud oculoglandular syndrome (POGS). About five percent of patients with acute cat scratch disease have this syndrome, which is characterized by follicular conjunctivitis (pink eye) with swollen lymph nodes nearby. It is often accompanied by a fever, and there may be bumps on the eyelid. Other symptoms known to be caused by bartonellosis, such as endocarditis (swelling of the inner lining of the heart), may also indicate that bartonellosis should be suspected.


Conjunctivitis results in easily seen inflammation of the usually white part of the eye (Source: CDC).

Inflammation of the middle layer of the structure that surrounds the eyeball is called uveitis. Uveitis causes redness of the eye and can cause light sensitivity, pain and floaters. Uveitis is sometimes associated with bartonellosis.

While case reports of eye symptoms caused by bartonellosis generally describe a sudden-onset condition, one case report describes a woman who had symptoms of bartonellosis in various body organs for more than five years, including chronic conjunctivitis (pink eye). She had multiple tests and treatments over that time including a Bartonella species test that was positive but considered nonspecific. It was only after other treatments didn’t work that antibiotics were administered. The antibiotics resolved her various symptoms.

Neurological Eye Symptoms

Neuroretinitis, an inflammation of the optic nerve head, occurs in about 2% of people with cat scratch disease (acute Bartonella henselae infection). Two-thirds of cases of neuroretinitis are caused by bartonellosis.

Neuroretinitis is usually characterized by sudden, complete vision loss and swelling that creates a star pattern in the macula (the light-sensitive tissue at the back of the eye that feeds information into the optic nerve). Though this is the typical case of neuroretinitis caused by bartonellosis, it can vary greatly. It can cause changes such as seeing odd shapes or colors Furthermore, case reports have included people who lose their vision with no other symptoms, have blurry vision with a headache, and more.

Treatment can usually, but not always, restore vision, but it can take months to resolve and there can still be long-term consequences. Complications can also occur. In one case, a child was diagnosed with neuroretinitis. Treatment was started six weeks after the diagnosis, but his vision in one eye got worse. After treatment, a full-thickness macular hole was discovered. The hole was monitored and resolved after six months.

Vascular Eye Symptoms

The eye has an important network of tiny blood vessels that provide nourishment to the tissue, but unnecessary growth of new capillaries can lead to a range of symptoms such as vision problems. Vasoproliferation (irregular growth of new blood vessels) may be more common in immunocompromised people, such as those being treated with chemotherapy products. These symptoms can be observed on the skin and in the liver and spleen and may also occur in the eye.

Tiny blood vessels in the eyes supply nutrients to cells. In the above image, larger retinal blood vessels can be seen (Source: NIH).

Vasoproliferative symptoms seem to be caused by vascular endothelial growth factor (VEGF) stimulated by bartonellosis. More research on the relationship between VEGF and bartonellosis is needed. Meanwhile, anti-VEGF agents have been used to treat vasoproliferative eye symptoms.


Bartonellosis can affect every part of the eye, and symptoms can be sudden and severe. Diagnosis and treatment decisions are complicated by other pathogens and diseases that can cause similar symptoms. It is important for patients and physicians to be aware of any prior animal or insect exposure that may indicate Bartonella infection. Considering additional systemic symptoms of bartonellosis may also help to clarify the diagnosis.  

Learn more about bartonellosis and the testing that Galaxy Diagnostics offers here.


Kalogeropoulos, C. et al. (2011). Bartonella and intraocular inflammation: A series of cases and review of literature. Clinical Ophthalmology, 5, 817-829. doi:10.2147/OPTH.S20157

Accorinti, M. (2009). Ocular bartonellosis. International Journal of Medical Sciences, 6(3), 131-132.

Rolain, J-M., & Raoult, D. (2012). Bartonella infections. In L. Goldman & A. I. Schafer (Eds.), Goldman’s Cecil medicine (24th ed., ch. 323, pp. 1906-1910). Philadelphia, PA: Elsevier Saunders.

Spinella, A. et al. (2012). Beyond cat scratch disease: A case report of Bartonella infection mimicking vasculitic disorder. Case Reports in Infectious Diseases, 2012, article 354625.

Woo, M. et al. (2018). A case of retinal vessel occlusion caused by Bartonella infection. Journal of Korean Medical Science, 33(47), e297. doi:10.3346/jkms.2018.33.e297

Fairbanks, A. M. et al. (2019). Treatment strategies for neuroretinitis: Current options and emerging therapies. Current Treatment Options in Neurology, 21(8), 36. doi:10.1007/s11940-019-0579-0

Michel, Z. et al. (2019). Multimodal imaging of two unconventional cases of Bartonella neuroretinitis [epub ahead of print]. Retinal Cases & Brief Reports. doi:10.1097/ICB.0000000000000893

Gunzenhauser, R. C. et al. (2019). The development and spontaneous resolution of a full-thickness macular hole in Bartonella henselae neuroretinitis in a 12-year-old boy. American Journal of Ophthalmology Case Reports, 15, 100515. doi:10.1016/j.ajoc.2019.100515

Toumanidou, V. et al. (2017). Neuroretinitis secondary to Bartonella henselae in a patient with myelinated retinal nerve fibers: Diagnostic dilemmas and treatment. Ocular Immunology and Inflammation, 27(3), 396-398. doi:10.1080/09273948.2017.1409357

Semes, L. P. (2018, March 23). Optic disc swelling early sign of cat-scratch neuroretinitis [sic]. Available at:

Mabra, D. et al. (2018). Ocular manifestations of bartonellosis. Current Opinion in Ophthalmology, 29(6), 582-587. doi:10.1097/ICU.0000000000000522

Beckerman, Z. et al. (2019). Rare presentation of endocarditis and mycotic brain aneurysm [epub ahead of print]. The Annals of Thoracic Surgery. doi:10.1016/j.athoracsur.2019.06.073



Another great article by Galaxy Lab. Please read the following article for more information on Bartonella, as various strains are suspected to be transmitted by ticks, mites, various flies and spiders, and other modes, and it is far more prevalent than thought:  Fifteen species of gram-negative aerobic Bartonella are known to infect humans; however Dr. Ricardo Maggi’s statement is quite telling, “This case reinforces the hypothesis that any Bartonella species can cause human infection.”  

For more on Bartonella and the eyes:


The Macabre World of Mind-Controlling Parasites

The macabre world of mind-controlling parasites

Summary: Understanding how parasites ‘hack’ the brains of their hosts may provide new insights into decision making and behavior.

Source: Frontiers

Imagine a parasite that makes an animal change its habits, guard the parasite’s offspring or even commit suicide. While mind-control may sound like something out of a science fiction movie, the phenomenon is very real — and has spawned a new field, neuro-parasitology. As outlined in an article published in Frontiers in Psychology, understanding how parasites “hack” their host’s nervous system to achieve a particular goal could provide new insights into how animals control their own behavior and make decisions.

“Parasites have evolved, through years of co-evolution with their host, a significant ‘understanding’ of their hosts’ neuro-chemical systems,” explains one of the article’s authors, Professor Frederic Libersat from Ben-Gurion University of the Negev in Israel. “Exploring these highly specific mechanisms could reveal more about neural control of animal behavior.”

The article describes some of the sophisticated, cunning and gruesome ways that various parasites outwit and exploit their insect hosts.

One method is to affect how an insect navigates. The spores of one parasitic fungus, for example, invade an ant’s body, where the fungus grows and consumes the ant’s organs while leaving the vital organs intact. The fungus then releases chemicals that cause the ant to climb a tree and grip a leaf with its mouthparts. After emerging from the ant’s body, the fungus releases spore-filled capsules that explode during their fall, spreading the infectious spores over the ground below. By forcing the ant to climb a tree, the fungus increases the dispersal of the falling spores and the chance of infecting another ant.

Similarly, a parasitic hairworm causes infected crickets to seek out water — where they drown. The cricket’s suicide enables the worms to enter an aquatic environment for reproduction.

In another type of interaction, called “bodyguard manipulation,” the parasite forces the infected insect to guard its young. One such parasite is a wasp, which injects its eggs into a caterpillar by stinging it. Inside the live caterpillar, the eggs hatch into larvae, which feed on the caterpillar’s blood. Eventually, as many as 80 larvae emerge from the caterpillar’s body before forming cocoons to complete their growth into adult wasps.

However, wasp larvae are vulnerable to predators in their cocoons. To scare potential predators away, one or two larvae remain in the caterpillar and control its behavior through an unknown mechanism, so that it acts aggressively towards predators — thereby protecting the cocoons.

These examples shed light on the very old and highly specific relationship between parasites and hosts. But how exactly do these parasites affect their host’s behavior?

This shows an ant with a parasite attached to it

Neuro-parasitology is still a young field, and in most cases, researchers do not yet fully understand the mechanisms involved. However, many such parasites produce their effects by releasing compounds that act on the neural circuitry of the host. Identifying and using these compounds in the lab could help scientists to work out how neural circuits control behavior.

“Because neurotoxins are the outcome of one animal’s evolutionary strategy to incapacitate another, they are usually highly effective and specific,” says Libersat.

“Chemical engineers can generate hundreds of potential neurotoxins in the lab, but these are random and often useless, whereas any natural neurotoxin has already passed the ultimate screening test, over millions of years of co-evolution.”


Media Contacts:
Conn Hastings – Frontiers
Image Source:
The image is adapted from the Frontiers news release.

Original Research: Open access
“Mind Control: How Parasites Manipulate Cognitive Functions in Their Insect Hosts”.Frederic Libersat, Maayan Kaiser and Stav Emanuel.
Frontiers in Psychology. doi:10.3389/fpsyg.2018.00572


Mind Control: How Parasites Manipulate Cognitive Functions in Their Insect Hosts

Neuro-parasitology is an emerging branch of science that deals with parasites that can control the nervous system of the host. It offers the possibility of discovering how one species (the parasite) modifies a particular neural network, and thus particular behaviors, of another species (the host). Such parasite–host interactions, developed over millions of years of evolution, provide unique tools by which one can determine how neuromodulation up-or-down regulates specific behaviors. In some of the most fascinating manipulations, the parasite taps into the host brain neuronal circuities to manipulate hosts cognitive functions. To name just a few examples, some worms induce crickets and other terrestrial insects to commit suicide in water, enabling the exit of the parasite into an aquatic environment favorable to its reproduction. In another example of behavioral manipulation, ants that consumed the secretions of a caterpillar containing dopamine are less likely to move away from the caterpillar and more likely to be aggressive. This benefits the caterpillar for without its ant bodyguards, it is more likely to be predated upon or attacked by parasitic insects that would lay eggs inside its body. Another example is the parasitic wasp, which induces a guarding behavior in its ladybug host in collaboration with a viral mutualist. To exert long-term behavioral manipulation of the host, parasite must secrete compounds that act through secondary messengers and/or directly on genes often modifying gene expression to produce long-lasting effects.



Parasites are a whole new fantastical frontier. I’ll never forget this information on how parasites affect human behavior by Dr. Klinghardt, which I found here:

  • Parasite patients often express the psyche of the parasites – sticky, clingy, impossible to tolerate – but a wonderful human being is behind all of that.

  • We are all a composite of many personalities. Chronic infections outnumber our own cells by 10:1. We are 90% “other” and 10% “us”. Our consciousness is a composite of 90% microbes and 10% us.

  • Our thinking, feeling, creativity, and expression are 90% from the microbes within us. Patients often think, crave, and behave as if they are the parasite.

  • Our thinking is shaded by the microbes thinking through us. The food choices, behavioral choices, and who we like is the thinking of the microbes within us expressing themselves.

  • Patients will reject all treatments that affect the issue that requires treating.

  • Patients will not guide themselves to health when the microbes have taken over.

For a great read on parasite treatments:

as well as this one:

There’s a link between T. Gondii (Toxoplasmosis) and risky behavior as well as schizophrenia

It can be transmitted by ticks (Castor Bean) as well as by undercooked deer meat:


Providence certainly has a sense of humor. On one hand, similarly to how the Japanese Barberry provides a uniquely favorable environment for tick questing, which is undesirable to humans, we derive Barberry, the yellow root of the plant to treat inflammation in Lyme disease.  Recently, Barberry was listed as a FDA approved drug with higher activity than current front line drugs for Bartonella:

And, as mentioned in this article: the fungus Cordyceps hijacks the ant to propitiate itself but here again, many Lyme patients use Cordyceps to fight microbes, lower inflammation, and increase energy and oxygen:


Babesia Subverts Adaptive Immunity and Enhances Lyme Disease Severity

. 2019; 10: 1596.
Published online 2019 Jul 10. doi: 10.3389/fmicb.2019.01596
PMCID: PMC6635642
PMID: 31354683

Protozoan Parasite Babesia microti Subverts Adaptive Immunity and Enhances Lyme Disease Severity


Lyme disease is the most prominent tick-borne disease in the United States. Co-infections with the tick-transmitted pathogens Babesia microti and Borrelia burgdorferi sensu stricto are becoming a serious health problem. B. burgdorferi is an extracellular spirochete that causes Lyme disease while B. microti is a protozoan that infects erythrocytes and causes babesiosis. Testing of donated blood for Babesia species is not currently mandatory due to unavailability of an FDA approved test. Transmission of this protozoan by blood transfusion often results in high morbidity and mortality in recipients.

Infection of C3H/HeJ mice with B. burgdorferi and B. microti individually results in inflammatory Lyme disease and display of human babesiosis-like symptoms, respectively.

Here we use this mouse model to provide a detailed investigation of the reciprocal influence of the two pathogens on each other during co-infection.

We show that

  • burgdorferi infection attenuates parasitemia in mice while
  • B. microti subverts the splenic immune response, such that a marked decrease in splenic B and T cells, reduction in antibody levels and diminished functional humoral immunity, as determined by spirochete opsonophagocytosis, are observed in co-infected mice compared to only B. burgdorferi infected mice


  • immunosuppression by B. microti in co-infected mice showed an association with enhanced Lyme disease manifestations.

This study demonstrates the effect of only simultaneous infection by B. burgdorferi and B. microti on each pathogen, immune response and on disease manifestations with respect to infection by the spirochete and the parasite. In our future studies, we will examine the overall effects of sequential infection by these pathogens on host immune responses and disease outcomes.



Two of the authors recently completed a review of literature on concurrent Babesia and Lyme infections:

Due to the high prevalence of infection and the issues of congenital transmission and transmission through blood transfusion, the issue of concurrent infection and what it does to animal and human health is of paramount importance.

For more on Babesia: Symptom checklist within this link as well as treatment options.

While a current article downplays Babesia in Canada, another article shows it’s much more of a problem than suspected:  This clearly shows there were more than 200 Babesia transfusion-transmissions reported. It also shows you don’t have to reside in an endemic area or travel to an endemic area to get it. The article also clearly points out that the geographic range of ticks is expanding, which means the pathogens they carry will as well.

Ticks Are One Way Tularemia Can Be Spread. Rabbits Are Another

Ticks are one way tularemia can be spread. Rabbits are another.

Avid Hiker Meets Bad Bug, Ends Up With Babesiosis

Avid hiker meets bad bug, ends up with babesiosis

Dear Dr. Roach • I am an avid hiker, and I live in an area with lots of Lyme disease. I recently developed some fever, headache, shaking chills and dark urine, and just felt awful. My doctor did some blood tests and said I had Babesia and/or Anaplasma. Are these related to Lyme disease? — I.J.M.


Answer • Like Lyme disease, babesiosis (caused usually by Babesia microti) and anaplasmosis (caused by Anaplasma phagocytophilium) can be spread by the bite of the deer tick, Ixodes scapularis, but neither bacteria species is related to Borrelia burgdorferi, the cause of Lyme disease. These diseases are not well-known by most people, nor even by many general doctors outside the areas where they are common, such as Wisconsin and Connecticut.

Babesiosis causes fever as high as 105.6 F, fatigue and feeling unwell. Dark urine is occasionally present. There are nonspecific lab findings, such as anemia and low platelet counts, but the diagnosis is confirmed by seeing the bacteria inside the red blood cells or by sophisticated blood testing (PCR). Treatment is with azithromycin and atovaquone.

Anaplasmosis has a generally lower fever, muscle aches, headache, chills and the same feeling of being unwell (called “malaise” in medical literature). Blood counts frequently show low white blood cell counts. The diagnosis is made by antibody or PCR testing, but treatment is usually started in the appropriate setting even before positive results. Treatment is with doxycycline.

Tickborne diseases may exist at the same time, so consideration must be given to people having both anaplasmosis and babesiosis, with or without Lyme disease.Doxycycline treatment for anaplasmosis also treats early Lyme disease, but does not treat babesiosis.

Both anaplasmosis and babesiosis can be very severe in people with immune system disease, such as HIV or an organ transplant. Older people are also at higher risk for severe disease.

Readers may email questions to or send mail to 628 Virginia Dr., Orlando, FL 32803.



This article reminds us of issues that demand answers:

  1. Why does mainstream medicine STILL know so little about tick-borne diseases after 40 years?
  2. Why is testing STILL being used that is so unreliable after 40 years?
  3. Please notice the doctor’s wise usage of “usually caused by?” This is wise because it could be one of a number of strains of Babesia.
  4. Please notice the the doctor’s wise explanation that a tick bite can transmit a whole host of pathogens – not just Lyme and sometimes not Lyme at all.  This issue is what is completely being neglected in mainstream medicine because doctors aren’t looking at all for any of these coinfections that can come with or without Lyme. Since testing is abysmal for ALL of them, they should be educated in symptomology since diagnosis has always been and still is a clinical diagnosis. Testing is not accurate and should not be the sole means of diagnosis.
  5. Little research has been done on concurrent infection & what it does to the body and how it affects testing:  But this recent study shows by Garg et al. shows a 85% probability for multiple infections including not only tick-borne pathogens but also opportunistic microbes such as EBV and other viruses.  Mainstream medicine isn’t touching this with a ten foot pole.
  6. The good doctor points out that anaplasmosis and babesiosis can be very severe in people with compromised immune systems. I believe tick borne illness compromises the immune system greatly and it’s only logical to conclude that concurrent infection with numerous pathogens do so even more. Add a few opportunistic infections like Chlamydia and EBV, and you have a patient as sick as a dog:  This is why patients are so sick and why standard mono therapy often doesn’t work.
Taking into account the totality of these issues presents an entirely different picture than what authorities such as the IDSA and CDC present.

This is often a complex illness with many moving parts which necessitates various drugs of longer duration than currently being used.

The CDC/IDSA “One size fits all” approach just doesn’t work. Until authorities take into account these variables and allow doctors to treat patients accordingly, it’s a losing battle – and make no mistake about it – it’s the patients who loose.


Prevalence of Babesia in Canadian Blood Donors: June – October 2018

2019 Aug 5. doi: 10.1111/trf.15470. [Epub ahead of print]

Prevalence of Babesia in Canadian blood donors: June-October 2018.



The erythrocytic protozoan parasite Babesia microti, the cause of human babesiosis, is transmitted not only by tick bites but also via blood transfusion. B. microti is endemic in the northeastern/upper midwestern United States, where partial screening of blood donations has been implemented. In Canada, a 2013 study of approximately 14,000 donors found no B. microti antibody-positive samples, suggesting low risk at that time.


Between June and October 2018, 50,752 Canadian donations collected from sites near the US border were tested for Babesia nucleic acid by transcription-mediated amplification (TMA). Reactive donations were tested for B. microti by IgG immunofluorescence assay and polymerase chain reaction. A subset of 14,758 TMA nonreactive samples was also screened for B. microti antibody. Donors who tested reactive/positive were deferred, asked about risk factors, and were requested to provide a follow-up sample for supplemental testing.


One sample from Winnipeg, Manitoba, was TMA and antibody reactive. Of the 14,758 TMA-nonreactive donations tested for antibody, four reactive donations were identified from southwestern Ontario near Lake Erie. None of the interviewed donors remembered any symptoms, likely tick exposure, or relevant travel within Canada or the United States.


This is the largest B. microti prevalence study performed in Canada. The results indicate very low prevalence, with only one TMA-confirmed-positive donation of 50,752 tested. This donor was from the only region in Canada where autochthonous infection has been reported. Seropositive donations in southwestern Ontario suggest low prevalence; travel should not be ruled out given the proximity to the US border.


For more: I would caution authorities in believing there is a low prevalence of Babesa. I’ve heard it takes a trained eye to see it and is rarely detected using only 1 diagnostic test. I think the word is out on the seriousness of tick-borne disease. Let’s not go back in time by adopting a carefree approach. We should be looking hard and using accurate testing methods.  This clearly shows there were more than 200 Babesia transfusion-transmissions reported. It also shows you don’t have to reside in an endemic area or travel to an endemic area to get it. The article also clearly points out that the geographic range of ticks is expanding, which means the pathogens they carry will as well.

According to Dr. Ken Singleton, Babesia is rarely detected using one diagnostic test alone.


Lyme-aware physicians generally screen for 2 strains—Babesia microti and WA-1 (Babesia duncani)—by testing for antibodies (by IFA or ELISA testing) made by the body against those organisms.

Another very useful test for Babesia is known as the FISH (fluorescent in situ hybridization) test. The FISH test is performed on thin blood smears (tests used to detect germs in white blood cells) and is able to detect the RNA (genetic material) of Babesia. If this test is positive, it is very strong evidence of the presence of active Babesia. The advantage of the FISH test is that it will detect other subspecies of Babesia in addition to B. microti and B. duncani. (A direct thick and thin blood smear using a staining technique called “Giemsa” can also be done by one’s local or commercial labs to look for Babesia organisms in red blood cells; however, it is an insensitive test except during acute Babesia, particularly when fever is present.)

A final potentially useful test is the Babesia PCR (polymerase chain reaction). Unfortunately, in my experience it is also not a sensitive test and is the least useful of the three tests mentioned.

All three of these tests—Babesia IFA, FISH, PCR—are available through IgeneX, a laboratory specializing in Lyme disease and other tick-borne organisms. Medical Diagnostics Laboratory (MDL) has two of the tests—Babesia ELISA and PCR. Both labs are excellent and I utilize both regularly. (See the resources section for more information.) However, as mentioned, Babesia can frequently escape detection by diagnostic tests. Therefore, many times babesiois must be a clinical diagnosis made by physicians who are experienced in its detection and treatment.

How many Canadian people slipped through the cracks?