Tag Archives: miyamotoi

Human seroprevalence of Borrelia miyamotoi in Manitoba, Canada, in 2011-2014: a cross-sectional study.

CMAJ Open. 2017 Sep 6;5(3):E690-E693. doi: 10.9778/cmajo.20170070. Kadkhoda K, et al Abstract BACKGROUND: Hard tick-borne relapsing fever caused by Borrelia miyamotoi has been reported in Russia, the Netherlands, Germany, Japan and the northeastern and upper midwestern United States. We sought to investigate the presence of B. miyamotoi infection in humans in Manitoba, Canada. METHODS: Two hundred fifty sera collected from residents Continues →

Spain has significant risk areas for contracting Lyme disease (borreliosis)

Molecular identification of Borrelia spirochetes in questing Ixodes ricinus from northwestern Spain Published online December 20th, 2107 Pablo Diaz et al ABSTRACT Background Ixodes ricinus, the predominant tick species in Europe, can transmit the causative agents of important human diseases such as Lyme borreliosis (LB), caused by Borrelia spirochetes. In northern Spain, LB is considered endemic; recently, a significant increase of the annual incidence of LB was Continues →


You might assume a patient infected with Borrelia miyamotoi, a relapsing fever spirochete, to present with a relapsing fever. However, your assumption would be wrong 48 out of 50 times, according to a case series published in the Annals of Internal Medicine. [1] The authors found that only 2 out of 50 patients infected with the relapsing spirochete B. miyamotoi Continues →

Mayo Researchers Identify New Borrelia Species that Causes Lyme Disease

Article sub-heading: Until now, Borrelia burgdorferi was only species believed to cause Lyme disease in North America [Canlyme note: actually, many scientists and patient advocate groups have been trying for decades to point to the obvious – Lyme disease is a borreliosis caused by many strains/species (genotypes), just as influenza is an illness caused by various strains – each with differing Continues →

The Need for Clinical Judgment in the Diagnosis and Treatment of Lyme Disease

Abstract Clinical practice guidelines are increasing in number. Unfortunately, when scientific evidence is uncertain, limited, or evolving, as is often the case, conflict often arises between guideline committees and practicing physicians, who bear the direct responsibility for the care of individual patients. The 2006 Infectious Diseases Society of America guidelines for Lyme disease, which have limited scientific support, could, if Continues →

Identification of Additional Anti-Persister Activity against Borrelia burgdorferi from an FDA Drug Library

Sept, 2015 Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA Abstract   Lyme disease is a leading vector-borne disease in the United States. Although the majority of Lyme patients can be cured with standard 2–4 week antibiotic treatment, 10%–20% of patients continue to suffer from prolonged post-treatment Lyme disease syndrome Continues →

Disease Risk & Landscape Attributes of Tick-Borne Borrelia Pathogens in the San Francisco Bay Area, California

Published: August 19, 2015 – DOI: 10.1371/journal.pone.0134812 Abstract Habitat heterogeneity influences pathogen ecology by affecting vector abundance and the reservoir host communities. We investigated spatial patterns of disease risk for two human pathogens in the Borrelia genus–B. burgdorferi and B. miyamotoi–that are transmitted by the western black-legged tick, Ixodes pacificus. We collected ticks (349 nymphs, 273 adults) at 20 sites Continues →

Remarkable diversity of tick or mammalian-associated Borreliae in the metropolitan San Francisco Bay Area, California

Natalia Fedorova, Joyce E. Kleinjan, David James, Lucia T. Hui, Hans Peeters, Robert S. Lane Abstract The diversity of Lyme disease (LD) and relapsing fever (RF)-group spirochetes in the metropolitan San Francisco Bay area in northern California is poorly understood. We tested Ixodes pacificus, I. spinipalpis, and small mammals for presence of borreliae in Alameda County in the eastern portion Continues →

Human Infections with Borrelia miyamotoi, Japan

[CanLyme note:  Public Health Agency of Canada researchers have reported finding Borrelia miyamotoi in ticks Canada wide. In Canada we have many strains and in North America in general there are many strains within the genus Borrelia that cause infection in humans. To attempt to distinguish what symptoms are from a relapsing fever Borrelia as opposed to a Lyme Disease Borrelia seems at this point Continues →

The prevalence of Borrelia miyamotoi infection, and co-infections with other Borrelia spp. in Ixodes scapularis ticks collected in Canada

Antonia Dibernardo, Tyler Cote, Nicholas H Ogden and L Robbin Lindsay Published: 15 April 2014 Abstract (provisional) Background Blacklegged ticks, Ixodes scapularis are vectors of the tick-borne pathogens Borrelia  burgdorferi, Anaplasma phagocytophilum and Babesia microti. Recently, the I. scapularis-borne   bacterium Borrelia miyamotoi has been linked to human illness in North America. The range of this tick is expanding in Canada which may Continues →

Tick-borne Pathogens in Northwestern California, USA [ B. miyamotoi is as abundant as its congener B. burgdorferi but is not tested for in humans ]

Daniel J. Salkeld , Stephanie Cinkovich, and Nathan C. Nieto To the Editor: In northwestern California, USA, the western black-legged tick, Ixodes pacificus, is a known vector ofBorrelia burgdorferi, the spirochete that causes Lyme disease.B. miyamotoi, which is more closely related to spirochetes that cause relapsing fever, has also been detected in 2 locations in California (1,2) and has recently been implicated as a Continues →

Investigation of Genotypes of Borrelia burgdorferi in Ixodes scapularis Ticks Collected during Surveillance in Canada

Ogden, et al Abstract The genetic diversity of Borrelia burgdorferi sensu stricto, the agent of Lyme disease in North America, has consequences for the performance of serological diagnostic tests and disease severity. To investigate B. burgdorferi diversity in Canada, where Lyme disease is emerging, bacterial DNA in 309 infected adult Ixodes scapularis ticks collected in surveillance was characterized by multilocus Continues →