Archive for the ‘Anaplasmosis’ Category

Case Report of Male With Anaplasmosis

https://www.cureus.com/articles/416304-relative-bradycardia-in-a-61-year-old-male-with-anaplasmosis-a-case-report#!/

Relative Bradycardia in a 61-Year-Old Male With Anaplasmosis: A Case Report

Jessica A. James • Melissa Brown • Samuel M. Segal • Maria Gutierrez-Castillo

Published: October 17, 2025

DOI: 10.7759/cureus.94785 

Open Access
Peer-Reviewed

Cite this article as: James J A, Brown M, Segal S M, et al. (October 17, 2025) Relative Bradycardia in a 61-Year-Old Male With Anaplasmosis: A Case Report. Cureus 17(10): e94785. doi:10.7759/cureus.94785

Abstract

Human granulocytic anaplasmosis (HGA), or anaplasmosis, is a tick-borne illness caused by Anaplasma phagocytophilum, a gram-negative intracellular bacterium. A. phagocytophilum is primarily transmitted by Ixodes scapularis in the northeast United States and by Ixodes pacificus in California. Presenting symptoms typically include fever, chills, malaise, headache, myalgia, and rarely a rash. This case describes a 61-year-old Black male with a complex medical history, including prior tick-borne and arboviral infections (Lyme disease, dengue fever, and chikungunya), hypertension, mixed hyperlipidemia, bilateral carotid artery dissection, gastroesophageal reflux disease, atrial fibrillation with rapid ventricular response, and current tobacco use. This patient presented to an emergency department in upstate New York with a fever, fatigue, constipation, myalgia, and night sweats. Throughout the patient’s hospital course, he maintained a state of relative bradycardia. The patient reported that he had returned from Haiti and the Dominican Republic two weeks prior to presentation in the emergency department and received several mosquito bites while abroad. Initial guideline-based empiric treatment was started with doxycycline due to suspicion of tick-borne illness, given his history of Lyme disease and his onset of symptoms while in upstate New York. Treatment was continued to complete a 14-day course after confirming the diagnosis of anaplasmosis by PCR testing of whole blood. After completing treatment with doxycycline, the patient’s symptoms resolved completely. This case illustrates a unique finding of relative bradycardia and fever of unknown origin in the context of recent international travel and history of tick-borne and arboviral infections.

 

Category:

Anaplasmosis, Heart Issues, Lyme, mosquitoes, research, Uncategorized

Babesia Rates Surge 9% in U.S. & 42% of Patients Are Coin-Infected

https://www.lymedisease.org/babesiosis-rates-surge-in-us/

Babesiosis rates surge by 9% annually in US; 42% of patients are co-infected

Penn State College of Medicine News

Oct. 8, 2024

Rates of babesiosis, a tick-borne parasitic disease, increased an average of 9% per year in the United States between 2015 and 2022.  And four in 10 patients were found to be co-infected with another tick-borne illness such as Lyme disease.

These were findings of a new study led by researchers at Penn State Health Milton S. Hershey Medical Center and Penn State College of Medicine.

“These findings suggest that clinicians should have a heightened vigilance of co-infection of other tick-borne illness among patients admitted with babesiosis,” said Paddy Ssentongo, infectious disease fellow, Penn State Health Milton S. Hershey Medical Center and lead author of the study.

“Ticks can carry other bacteria that cause Lyme disease and other tick-borne diseases like anaplasmosis and ehrlichiosis.”

They have published their findings in the journal Open Forum Infectious Diseases.

Babesiosis, sometimes referred to as “American malaria,” is caused by the Babesia parasite and is transmitted from bites of black-legged ticks. It’s found primarily in northeastern and midwestern states.

Similar to malaria

Like malaria, the parasite infects red blood cells, and the condition shares many similar clinical symptoms. According to the U.S. Centers for Disease Control and Prevention (CDC), although some people do not develop symptoms, others experience flu-like symptoms. The disease can be deadly for older adults and those with certain health conditions, such as a weakened immune system or lack of spleen.

“Understanding the drivers, dynamics and control of endemic and emerging vector-borne diseases is critical for global health interventions,” Ssentongo said.

The prevalence of babesiosis has been rising, according to the CDC. Ssentongo explained that climate change may play a role. Changing factors like temperature, humidity, rainfall and length of season have influenced the population and distribution of vectors like ticks as well as the population of animals that serve as reservoir hosts, like deer. As a result, ticks may be present in a wider geographical area.

The team set out to assess the current prevalence of babesiosis and Babesia co-infections as well as the effect of Babesia co-infection on mortality risk.

Using the TriNetX, a large, national database of clinical patient data from over 250 million individuals, they identified 3,521 individuals who were infected with babesiosis between October 2015 and December 2022.

Co-infections: Lyme, ehrlichiosis and anaplasmosis

The researchers found that the incidence of babesiosis increased an average of 9% per year. The majority of cases peaked during the summer months and were reported in northeastern states. Of those diagnosed with babesiosis, 42% were infected with one or more additional tick-borne diseases. That is a higher rate than what’s been found in previous studies.

The greatest percentage of those patients, 41%, were co-infected with the bacterium responsible for Lyme disease. A smaller portion of patients were co-infected with bacteria that cause ehrlichiosis and anaplasmosis, 3.7% and 0.3%, respectively.

When the team examined if co-infection amplified the risk of complications or led to worse outcomes, they found that there were no significant differences between the babesiosis-only group and the co-infection group. However, when they looked at mortality risk, they found that the risk of death was higher among the babesiosis-only group.

“Having both babesiosis and Lyme disease seemed not to be associated with worse mortality,” Ssentongo said, noting the finding was surprising. “It’s speculated that the concurrent presence of other tick-borne infections in the blood could alter the immune response by possibly ‘boosting’ it to effectively fight infections.”

The role of doxycycline

The difference in outcomes may also have to do with how other tick-borne illnesses are treated, Ssentongo said. In their study, the team found that the co-infection group was more likely to be prescribed doxycycline, the first line antibiotic treatment for Lyme disease, anaplasmosis and ehrlichiosis, compared to the babesiosis-only group. Ssentongo said that it raises a compelling question: Is doxycycline also effective in treating the Babesia parasite?

Currently, the treatment of babesiosis depends on disease severity. Treatment typically includes a combination of the antibiotics azithromycin and atovaquone. Red blood cell exchange, where abnormal red blood cells are removed and replaced by healthy ones, can also be considered for severely ill patients such as those with serious organ dysfunction. However, the survival benefit of red blood cell exchange hasn’t been studied extensively.

“For patients with babesiosis, we add on doxycycline as we’re investigating whether or not the patient has Lyme disease or other tick-borne diseases. We’ve seen better outcomes at our medical center with this approach,” Ssentongo said.

He said that there are other case reports where babesiosis has been successfully treated with doxycycline. However, more research is needed to understand the physiological pathways that underlie co-infection and how that might influence treatment protocols.

The most effective treatment approach is preventing tick-borne diseases in the first place, according to Ssentongo.

“If you live in areas where babesiosis is endemic, mostly states in the Northeast and the Midwest, take precautions, especially during the summer months,” Ssentongo said. “Practice tick-bite prevention practices. Wear long-sleeved shirts and pants and light-colored clothes. Use tick repellent and check for ticks after spending time outdoors.”

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For more:

Category:

Anaplasmosis, Babesia, Ehrlichiosis, Lyme, research

NYC Ticks Found to Carry 5 Different Infections

https://www.lymedisease.org/nyc-ticks-found-to-carry-5-different-infections/

NYC ticks found to carry 5 different infections

People often associate ticks with being in rural or suburban areas. But the infection-carrying arachnids can be found in densely populated cities as well.

In a study recently published in the Journal of Medical Entomology, researchers collected 2500 ticks from parks in four New York City boroughs—Queens, the Bronx, Staten Island, and Brooklyn.

When they tested the ticks, they found pathogens for five human diseases:

  • Lyme disease
  • ehrlichiosis
  • babesiosis
  • anaplasmosis
  • Rocky Mountain spotted fever

You can read the open-access journal article here.

For more:

Category:

Activism, Anaplasmosis, Babesia, Ehrlichiosis, Lyme, research, Rocky Mountain Spotted Fever

Seroprevalence of Borrelia burgdorferi sensu lato & Anaplasma phagocytophilum Infections in German Horses

https://www.mdpi.com/2076-2615/13/12/1984

Seroprevalence of Borrelia burgdorferi sensu lato and Anaplasma phagocytophilum Infections in German Horses

by 1,*,1, 2, 1, 3, 1 and 3
Received: 15 April 2023 / Revised: 30 May 2023 / Accepted: 10 June 2023 / Published: 14 June 2023

Abstract

There are limited data on Lyme borreliosis (LB), a tick-borne disease caused by the Borrelia burgdorferi sensu lato complex, in horses. Seropositivity is not necessarily associated with clinical disease. Data on seropositivity against Borrelia burgdorferi and Anaplasma phagocytophilum in German horses are sparse. Therefore, serum samples from horses (n = 123) suspected of having Lyme borreliosis and clinically healthy horses (n = 113) from the same stables were tested for specific antibodies against Borrelia burgdorferi sensu lato and Anaplasma phagocytophilum. The samples were screened for antibodies against Borrelia burgdorferi (ELISA and an IgG line immunoblot assay). Furthermore, the samples were examined for antibodies against B. burgdorferi and Anaplasma phagocytophilum with a validated rapid in-house test (SNAP® 4Dx Plus® ELISA).
The clinical signs of suspect horses included lameness (n = 36), poor performance (n = 19), and apathy (n = 12).
Twenty-three percent (n = 26) of suspect horses and 17% (n = 18) of clinically healthy horses were seropositive for having a Borrelia burgdorferi sensu lato infection (p = 0.371), showing that the detection of specific antibodies against B. burgdorferi alone is not sufficient for a diagnosis of equine LB. Anaplasma phagocytophilum seropositivity and seropositivity against both pathogens was 20%/6% in suspect horses and 16%/2% in the clinically healthy population, showing only minor differences (p = 0.108). Unspecific testing for antibodies against B. burgdorferi without clinical suspicion of Lyme borreliosis is not recommended since the clinical relevance of seropositivity against Borrelia burgdorferi sensu lato remains to be elucidated.
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Category:

Anaplasmosis, Lyme, research, Testing

1 in 5 Shelter Dogs Infected With Lyme, Co-Infections and/or Heartworm

https://www.lymedisease.org/shelter-dogs-infected-with-lyme/

1 in 5 shelter dogs infected with Lyme, co-infections and/or heartworm

By Leigh Beeson, University of Georgia

Aug. 23, 2023

Long the bane of pet owners’ existence, ticks and mosquitoes are expanding their geographic range due to warming temperatures, frequently bringing disease with them.

A new study from the University of Georgia suggests shelter dogs in the Eastern U.S. may be bearing the brunt of that burden.

The researchers analyzed blood samples from 3,750 dogs from animal shelters in 19 states across the Eastern U.S. to determine the prevalence of heartworm and three tick-borne bacteria.

The study found more than one in 10 of the dogs were infected with heartworm. More than 8% of the dogs had been exposed to the bacteria that causes Lyme disease. An additional 10% were infected with bacteria that cause anaplasmosis or ehrlichiosis, which are less well-known diseases contracted from ticks.

Almost 5% of the dogs had multiple infections, meaning many had been exposed to more than one disease-causing agent.

These diseases can easily avoided by using preventive medications. But that often requires access to veterinary care. Unfortunately, many neglected or stray animals that are brought to shelters haven’t received these preventatives for long periods of time, if they’ve had them at all.

For heartworm, infections may be treatable with medication and over even surgery, but it’s an expensive option. Unfortunately, many long-term infections are difficult to treat and may be fatal.

Corinna Hazelrig

Importance of prevention

“This study shows us how important those preventive medications are,” said Corinna Hazelrig, lead author of the study and a current doctoral student in UGA’s College of Veterinary Medicine. At the time of the research, Hazelrig was an undergraduate student in UGA’s Warnell School of Forestry and Natural Resources.

“Preventatives can be expensive, and some pet owners may not want to or be able to invest in them. However, these pathogens are common throughout the Eastern United States, and the best management strategy for your pet’s health is to use preventive medications on a regular basis.”

Climate change increasing range of disease-carrying mosquitoes, ticks

Diseases caused by ticks and mosquitoes pose a significant health risk to humans, their pets and wildlife.

Heartworms can cause lasting damage to the heart, lungs and other arteries in animals if left untreated. Lyme disease commonly results in loss of appetite, fatigue and lameness, but it can also damage the kidneys.

Heartworms aren’t a huge concern for people, but Lyme disease can lead to fever, a rash and joint and muscle aches. Symptoms of anaplasmosis and ehrlichiosis in people range from fever and severe headaches to more severe conditions, such as brain damage and organ failure.

All three tick-borne bacteria require antibiotics to clear the infection.

Due to climate change, the ticks and mosquitoes carrying these diseases are expanding their geographic range.

“People in the Northeastern U.S. don’t think heartworm is in their region, and people in the Southeastern U.S. don’t think Lyme disease is in their region,” Hazelrig said. “However, we detected heartworm in Maine, and we detected exposure to the causative agent of Lyme disease in Virginia. The change in our climate is allowing the geographic range of ticks and mosquitoes to expand.”

Disease-carrying pathogens pose threat to people

Even for people without pets, the increasing presence of disease-carrying ticks and mosquitoes is concerning.

A previous UGA study in collaboration with Clemson University found that areas where more dogs are exposed to the bacteria that causes Lyme disease have higher rates of human infection as well.

Michael Yabsley

“Collectively, these studies highlight the importance of dogs as sentinels for some pathogens that infect humans, including the agent of Lyme disease,” said Michael Yabsley, a co-author on that paper and a corresponding author on the present study.

Yabsley is a professor with joint appointments in UGA’s Warnell School of Forestry and Natural Resources and the College of Veterinary Medicine.

“These data help us understand the distribution of these pathogens, how their distributions are changing and where we may expect human infections to occur.”

This work was conducted in collaboration with the Companion Animal Parasite Council (CAPC), which has provided prevalence maps for multiple pathogens of domestic dogs and cats since 2012.

These maps are updated monthly and show what’s happening in every county, including areas where there may not have been a risk for some of these pathogens a decade ago. CAPC makes access to the monthly canine data available in its prevalence maps, a resource available free online.

With around a million test results collected monthly from dogs, these maps allow veterinarians, physicians, pet owners and travelers to assess the risk of exposure across the United States and Canada.

Click here to read the study.

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Please learn about so called ‘climate change,’ and the fact researchers must repeat this dogma in order to get government grants.  It is a fact that a lie repeated often enough becomes “truth.”

Similarly to erroneous modeling used to predict COVID deaths, researchers have used erroneous modeling to push a climate narrative regarding ticks and disease proliferation.  The media then regurgitates fake data as a stick to beat us all over the head to spread fear for a much larger, nefarious agenda.

Category:

Anaplasmosis, Ehrlichiosis, Lyme, mosquitoes, research, Ticks