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Infectious Disease: Lyme Disease

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Total 41 results found since Jan 2013.

This Year Might Be the Worst Tick Season Ever. Here ’ s Why
Marci Silbert wasn’t walking far on the evening of May 6. She, her husband, and another couple were visiting friends for dinner, and after eating, took a brief stroll down a short path to a small pond on their hosts’ property in the Berkshires in Massachusetts. They lingered for just a few moments, and then walked back. But that was all it took. The next day, her husband noticed a tick embedded in his forearm. Silbert had one on the inside of her knee, and the husband in the other couple had one on his thigh. Out of an abundance of caution, they went to the hospital, had them removed, and were given prophylacti...
Source: TIME: Health - June 20, 2023 Category: Consumer Health News Authors: Jeffrey Kluger Tags: Uncategorized climate change Disease Environment healthscienceclimate Source Type: news

UArizona researchers launch the Great Arizona Tick Check
As spring blooms across much of the state, University of Arizona researchers are encouraging the public to check for ticks and contribute to an important community health effort. Rosemary Brandt Today College of Agriculture& Life SciencesRhipicephalussanguineus_hires-small.jpg A male brown dog tick, Rhipicephalus sanguineus. Brown dog ticks are the primary vector for Rocky Mountain spotted fever in Arizona. CDC/ James GathanyHealthScience and TechnologyCollege of Agriculture and Life SciencesCollege of Public Health Media contact(s)Rosemary Brandt College of Agriculture and Life Sciencesrjbrandt@email.arizona...
Source: The University of Arizona: Health - March 17, 2023 Category: Universities & Medical Training Authors: rjbrandt Source Type: research

Erp and Rev Adhesins of the Lyme Disease Spirochete ’s Ubiquitous cp32 Prophages Assist the Bacterium during Vertebrate Infection
Infection and Immunity, Ahead of Print.
Source: Infection and Immunity - February 28, 2023 Category: Infectious Diseases Authors: Brian Stevenson, Catherine A. Brissette aDepartment of Microbiology, Immunology, and Molecular Genetics, University of Kentucky, Lexington, Kentucky, USA bDepartment of Entomology, University of Kentucky, Lexington, Kentucky, USA cDepartment of Biomedica Source Type: research

Bat tick found for the first time in New Jersey
(Rutgers University) A tick species associated with bats has been reported for the first time in New Jersey and could pose health risks to people, pets and livestock, according to a Rutgers-led study in the Journal of Medical Entomology. This species (Carios kelleyi) is a " soft " tick. Deer ticks, which carry Lyme disease, are an example of " hard " ticks.
Source: EurekAlert! - Infectious and Emerging Diseases - September 9, 2020 Category: Infectious Diseases Source Type: news

The Transcriptome of the Salivary Glands of Amblyomma aureolatum Reveals the Antimicrobial Peptide Microplusin as an Important Factor for the Tick Protection Against Rickettsia rickettsii Infection
Conclusion In conclusion, our data show that R. rickettsii exerts a modulatory effect on the transcriptional profile the SG of A. aureolatum. Moreover, RNAi experiments demonstrated that the knockdown of one microplusin increases the susceptibility of ticks to infection, suggesting that this is one important factor for the control of R. rickettsii. The functional characterization of the additional CDSs modulated by infection is warranted and might reveal other factors that interfere with the acquisition and/or transmission of this tick-borne pathogen. Ethics Statement All procedures involving vertebrate animals were car...
Source: Frontiers in Physiology - May 2, 2019 Category: Physiology Source Type: research

Hot, Dry New England Summer Brings Fewer Cases Of Lyme Disease
SCARBOROUGH, Maine (AP) — New England’s hot summer might be helping keep the ticks that carry Lyme disease at bay. The Northeastern states — which are some of the worst for Lyme in the U.S., posing a hazard to residents and vacationers alike — are still totaling the number of Lyme cases from the summer months, and there will likely be more in the fall. But preliminary indicators show the disease abating, and public health authorities are finding fewer deer ticks, state officials and researchers said. In Maine, there had been a steady annual growth of Lyme cases, including a jump of 23 percent to more than 1...
Source: WBZ-TV - Breaking News, Weather and Sports for Boston, Worcester and New Hampshire - September 10, 2018 Category: Consumer Health News Authors: Health – CBS Boston Tags: Health News Local TV LYME DISEASE Source Type: news

DEET Is the Most Effective Bug Spray. But Is It Safe?
Sure, itchy bug bites are a nuisance. But for those living in parts of the country where mosquito or tick-borne illnesses are common—and these days, that’s most of us—bug-repellent sprays and liquids are an important safeguard against Lyme disease, West Nile virus and other serious health conditions. The annual number of people sickened by mosquitos or tick bites has more than tripled since 2004, according to the CDC. The World Health Organization has concluded that climate change is a likely contributor to these increases, which are predicted to continue as warmer global temperatures expand the habitats ...
Source: TIME: Health - July 25, 2018 Category: Consumer Health News Authors: Markham Heid Tags: Uncategorized healthytime Research Source Type: news

Fewer Scientists Are Studying Insects. Here ’s Why That’s So Dangerous
In the summer of 2016, Jerome Goddard, a medical entomologist in Mississippi, received an email from the U.S. Centers for Disease Control and Prevention (CDC) with a desperate ask. The agency was conducting an “urgent” search for insect scientists around the U.S. who could take up to a six-month paid leave from work to help the CDC fight the Zika outbreak in the U.S., and possibly respond to areas with local transmission if needed. “That’s how bad it is—they need to borrow someone,” says Goddard, an extension professor of medical entomology at Mississippi State University. “We can&...
Source: TIME: Health - February 14, 2018 Category: Consumer Health News Authors: Alexandra Sifferlin Tags: Uncategorized healthytime public health Source Type: news

Prevalence and distribution of Borrelia and Babesia species in ticks feeding on dogs in the U.K.
In this study, ticks were collected from dogs by veterinarians participating in a U.K.‐wide tick surveillance programme. The ticks were subjected to polymerase chain reaction and sequence analysis for detection of Borrelia burgdorferi s.l. and Babesia spp. pathogens, the distributions of which were mapped. DNA of B. burgdorferi s.l. and Babesia spp. was detected in 2.0% and 1.5% of the ticks analysed, respectively. The results map a widespread distribution of the two pathogens in the U.K.
Source: Medical and Veterinary Entomology - August 28, 2017 Category: Veterinary Research Authors: S. ABDULLAH, C. HELPS, S. TASKER, H. NEWBURY, R. WALL Tags: Original Article Source Type: research

Host-Seeking Phenology of Ixodes pacificus (Acari: Ixodidae) Nymphs in Northwestern California in Relation to Calendar Week, Woodland Type, and Weather Conditions
Local knowledge of when humans are at elevated risk for exposure to tick vectors of human disease agents is required both for the effective use of personal protection measures to avoid tick bites and for implementation of control measures to suppress host-seeking ticks. Here, we used previously published data on the seasonal density of host-seeking Ixodes pacificus Cooley and Kohls nymphs, the primary vectors of Lyme disease spirochetes in the far western USA, collected across a broad habitat and climate gradient in northwestern California to identify predictors of periods of time within the year when questing nymphal dens...
Source: Journal of Medical Entomology - January 11, 2017 Category: Biology Authors: Eisen, R. J., Clark, R. J., Monaghan, A. J., Eisen, L., Delorey, M. J., Beard, C. B. Tags: Sampling, Distribution, Dispersal Source Type: research

Comparison of Vector Efficiency of Ixodes scapularis (Acari: Ixodidae) From the Northeast and Upper Midwest of the United States for the Lyme Disease Spirochete Borrelia mayonii
Borrelia mayonii, a recently recognized species within the Borrelia burgdorferi sensu lato complex, has been detected in host-seeking Ixodes scapularis Say ticks and found to be associated with Lyme disease in the Upper Midwest. This spirochete has, to date, not been documented from the Northeast, but we previously demonstrated that I. scapularis ticks originating from Connecticut are capable of serving as a vector of B. mayonii. In this follow-up study, we compared the vector efficiency for B. mayonii (strain MN14-1420) of I. scapularis ticks originating from Minnesota in the Upper Midwest and Connecticut in the Northeast...
Source: Journal of Medical Entomology - January 11, 2017 Category: Biology Authors: Eisen, L., Breuner, N. E., Hojgaard, A., Hoxmeier, J. C., Pilgard, M. A., Replogle, A. J., Biggerstaff, B. J., Dolan, M. C. Tags: Short Communication Source Type: research

Presence of Borrelia turdi and Borrelia valaisiana (Spirochaetales: Spirochaetaceae) in Ticks Removed From Birds in the North of Spain, 2009-2011
This study corroborates the presence of B. turdi and B. valaisiana in ticks from birds in the north of Spain. The presence of these bacteria in larval specimens could suggest the role of birds as their reservoirs, or the occurrence of the cofeeding phenomenon. In addition, the detection of B. turdi and B. valaisiana in H. punctata and I. frontalis ticks, respectively, is reported for the first time.
Source: Journal of Medical Entomology - January 11, 2017 Category: Biology Authors: Palomar, A. M., Portillo, A., Santibanez, P., Mazuelas, D., Roncero, L., Gutierrez, O., Oteo, J. A. Tags: Short Communication Source Type: research

A Density Map of the Tick-Borne Encephalitis and Lyme Borreliosis Vector Ixodes ricinus (Acari: Ixodidae) for Germany
The castor bean tick Ixodes ricinus (L.) is the principal vector for a variety of viral, bacterial, and protozoan pathogens causing a growing public-health issue over the past decades. However, a national density map of I. ricinus is still missing. Here, I. ricinus nymphs in Germany were investigated by compiling a high-resolution map depicting the mean annually accumulated nymphal density, as observed by monthly flagging an area of 100 m2. Input data comprise ticks collected at 69 sampling sites. The model domain covers an area of about 357,000 km2 (regional scale). Two negative binomial regression models were fitted to t...
Source: Journal of Medical Entomology - November 11, 2016 Category: Biology Authors: Brugger, K., Boehnke, D., Petney, T., Dobler, G., Pfeffer, M., Silaghi, C., Schaub, G. A., Pinior, B., Dautel, H., Kahl, O., Pfister, K., Süss, J., Rubel, F. Tags: Modeling/GIS, Risk Assessment, Economic Impact Source Type: research

Critical Evaluation of the Linkage Between Tick-Based Risk Measures and the Occurrence of Lyme Disease Cases
The nymphal stage of the blacklegged tick, Ixodes scapularis Say, is considered the primary vector to humans in the eastern United States of the Lyme disease spirochete Borrelia burgdorferi sensu stricto. The abundance of infected host-seeking nymphs is commonly used to estimate the fundamental risk of human exposure to B. burgdorferi, for the purpose of environmental risk assessment and as an outcome measure when evaluating environmentally based tick or pathogen control methods. However, as this tick-based risk measure does not consider the likelihoods of either human encounters with infected ticks or tick bites resulting...
Source: Journal of Medical Entomology - September 2, 2016 Category: Biology Authors: Eisen, L., Eisen, R. J. Tags: Forum Source Type: research

Evidence for Personal Protective Measures to Reduce Human Contact With Blacklegged Ticks and for Environmentally Based Control Methods to Suppress Host-Seeking Blacklegged Ticks and Reduce Infection with Lyme Disease Spirochetes in Tick Vectors and Rodent Reservoirs
In the 1980s, the blacklegged tick, Ixodes scapularis Say, and rodents were recognized as the principal vector and reservoir hosts of the Lyme disease spirochete Borrelia burgdorferi in the eastern United States, and deer were incriminated as principal hosts for I. scapularis adults. These realizations led to pioneering studies aiming to reduce the risk for transmission of B. burgdorferi to humans by attacking host-seeking ticks with acaricides, interrupting the enzootic transmission cycle by killing immatures infesting rodent reservoirs by means of acaricide-treated nesting material, or reducing deer abundance to suppress...
Source: Journal of Medical Entomology - September 2, 2016 Category: Biology Authors: Eisen, L., Dolan, M. C. Tags: Review Source Type: research