Filtered By:
Infectious Disease: Lyme Disease

This page shows you your search results in order of date. This is page number 2.

Order by Relevance | Date

Total 41 results found since Jan 2013.

Modeling the Geographic Distribution of Ixodes scapularis and Ixodes pacificus (Acari: Ixodidae) in the Contiguous United States
In addition to serving as vectors of several other human pathogens, the black-legged tick, Ixodes scapularis Say, and western black-legged tick, Ixodes pacificus Cooley and Kohls, are the primary vectors of the spirochete (Borrelia burgdorferi) that causes Lyme disease, the most common vector-borne disease in the United States. Over the past two decades, the geographic range of I. pacificus has changed modestly while, in contrast, the I. scapularis range has expanded substantially, which likely contributes to the concurrent expansion in the distribution of human Lyme disease cases in the Northeastern, North-Central and Mid...
Source: Journal of Medical Entomology - September 2, 2016 Category: Biology Authors: Hahn, M. B., Jarnevich, C. S., Monaghan, A. J., Eisen, R. J. Tags: Sampling, Distribution, Dispersal Source Type: research

Impact of white ‐tailed deer on the spread of Borrelia burgdorferi
This study examines the pathogen prevalence rate of Borrelia in adult Ixodes scapularis (Ixodida: Ixodidae), the black‐legged tick, collected from white‐tailed deer and compares it with pathogen prevalence rates in adult ticks gathered by dragging vegetation in two contiguous counties west of the Hudson Valley in upstate New York. In both Broome and Chenango Counties, attached and unattached ticks harvested from white‐tailed deer had significantly lower prevalences of B. burgdorferi than those collected from vegetation. No attached ticks on deer (n = 148) in either county, and only 2.4 and 7.3% of unattached ti...
Source: Medical and Veterinary Entomology - August 31, 2016 Category: Veterinary Research Authors: A. ROOME, L. HILL, V. AL ‐FEGHALI, C. G. MURNOCK, J. A. GOODSELL, R. SPATHIS, R. M. GARRUTO Tags: Original Article Source Type: research

CDC scientists review methods to prevent bites and suppress ticks that transmit Lyme disease
(Entomological Society of America) Dr. Lars Eisen and Marc Dolan of the US Centers for Disease Control and Prevention have reviewed decades of scientific literature on the effectiveness of various methods of preventing bites and controlling ticks that transmit Lyme disease. Their findings are published in the Journal of Medical Entomology.
Source: EurekAlert! - Infectious and Emerging Diseases - July 20, 2016 Category: Infectious Diseases Source Type: news

Prevalence of Tick-Borne Pathogens in Host-Seeking Amblyomma americanum (Acari: Ixodidae) and Odocoileus virginianus (Artiodactyla: Cervidae) in Florida
Amblyomma americanum (L.), the lone star tick, is an aggressive tick that is expanding its geographic range within the United States. This tick is the vector for the human and veterinary pathogens Ehrlichia chaffeensis and Ehrlichia ewingii and is associated with other microbes of unspecified pathogenicity including Rickettsia amblyommii, Panola Mountain Ehrlichia, and Borrelia lonestari. In Florida, there has been sparse contemporary data on the prevalence of these organisms in host-seeking lone star ticks. To determine the prevalence of this tick and associated microbes in North Central Florida state parks, ~1,500 lone s...
Source: Journal of Medical Entomology - June 29, 2016 Category: Biology Authors: Sayler, K. A., Loftis, A. D., Beatty, S. K., Boyce, C. L., Garrison, E., Clemons, B., Cunningham, M., Alleman, A. R., Barbet, A. F. Tags: Vector-Borne Diseases, Surveillance, Prevention Source Type: research

First Evidence of an Established Population of Ixodes scapularis (Acari: Ixodidae) in South Dakota
Ixodes scapularis Say (Acari: Ixodidae) is the most important vector of human disease in the United States. Recent efforts by public health officials to determine its presence on a county-by-county basis have been undertaken to assist in Lyme disease risk assessment. Recent modeling efforts show that South Dakota can potentially support populations of I. scapularis based on favorable climatic conditions and presence of suitable hosts to support tick populations within the state. We provide the first documentation of an established population of I. scapularis in Clay County, SD, providing only the third record of the presen...
Source: Journal of Medical Entomology - June 29, 2016 Category: Biology Authors: Maestas, L. P., Adams, S. L., Britten, H. B. Tags: Short Communication Source Type: research

Habitat Suitability Model for the Distribution of Ixodes scapularis (Acari: Ixodidae) in Minnesota
Ixodes scapularis Say, the black-legged tick, is the primary vector in the eastern United States of several pathogens causing human diseases including Lyme disease, anaplasmosis, and babesiosis. Over the past two decades, I. scapularis-borne diseases have increased in incidence as well as geographic distribution. Lyme disease exists in two major foci in the United States, one encompassing northeastern states and the other in the Upper Midwest. Minnesota represents a state with an appreciable increase in counties reporting I. scapularis-borne illnesses, suggesting geographic expansion of vector populations in recent years. ...
Source: Journal of Medical Entomology - May 19, 2016 Category: Biology Authors: Johnson, T. L., Bjork, J. K. H., Neitzel, D. F., Dorr, F. M., Schiffman, E. K., Eisen, R. J. Tags: Vector-Borne Diseases, Surveillance, Prevention Source Type: research

Linkages of Weather and Climate With Ixodes scapularis and Ixodes pacificus (Acari: Ixodidae), Enzootic Transmission of Borrelia burgdorferi, and Lyme Disease in North America
Lyme disease has increased both in incidence and geographic extent in the United States and Canada over the past two decades. One of the underlying causes is changes during the same time period in the distribution and abundance of the primary vectors: Ixodes scapularis Say and Ixodes pacificus Cooley and Kohls in eastern and western North America, respectively. Aside from short periods of time when they are feeding on hosts, these ticks exist in the environment where temperature and relative humidity directly affect their development, survival, and host-seeking behavior. Other important factors that strongly influence tick...
Source: Journal of Medical Entomology - March 8, 2016 Category: Biology Authors: Eisen, R. J., Eisen, L., Ogden, N. H., Beard, C. B. Tags: Forum Source Type: research

County-Scale Distribution of Ixodes scapularis and Ixodes pacificus (Acari: Ixodidae) in the Continental United States
The blacklegged tick, Ixodes scapularis Say, is the primary vector to humans in the eastern United States of the Lyme disease spirochete Borrelia burgdorferi, as well as causative agents of anaplasmosis and babesiosis. Its close relative in the far western United States, the western blacklegged tick Ixodes pacificus Cooley and Kohls, is the primary vector to humans in that region of the Lyme disease and anaplasmosis agents. Since 1991, when standardized surveillance and reporting began, Lyme disease case counts have increased steadily in number and in geographical distribution in the eastern United States. Similar trends h...
Source: Journal of Medical Entomology - March 8, 2016 Category: Biology Authors: Eisen, R. J., Eisen, L., Beard, C. B. Tags: Sampling, Distribution, Dispersal Source Type: research

Infection of Immature Ixodes scapularis (Acari: Ixodidae) by Membrane Feeding
A reduction in the use of animals in infectious disease research is desirable for animal welfare as well as for simplification and standardization of experiments. An artificial silicone-based membrane-feeding system was adapted for complete engorgement of adult and nymphal Ixodes scapularis Say (Acari: Ixodidae), and for infecting nymphs with pathogenic, tick-borne bacteria. Six wild-type and genetically transformed strains of four species of bacteria were inoculated into sterile bovine blood and fed to ticks. Pathogens were consistently detected in replete nymphs by polymerase chain reaction. Adult ticks that ingested bac...
Source: Journal of Medical Entomology - March 8, 2016 Category: Biology Authors: Oliver, J. D., Lynn, G. E., Burkhardt, N. Y., Price, L. D., Nelson, C. M., Kurtti, T. J., Munderloh, U. G. Tags: Vector/Pathogen/Host Interaction, Transmission Source Type: research

New Records of Ixodes affinis (Acari: Ixodidae) Parasitizing Avian Hosts in Southeastern Virginia
This study presents evidence of I. affinis parasitizing five new host passerine species. During 2012–2014, 1,888 birds were captured and examined for ticks, and 18 immature I. affinis were collected from 12 birds—six Carolina Wrens (Thyrothorus ludovicianus); two Brown Thrashers (Toxostoma rufum); and one American Robin (Turdus migratorius), Eastern Towhee (Pipilo erythrophthalmus), Northern Cardinal (Cardinalis cardinalis), and White-throated Sparrow (Zonotrichia albicollis). Of 15 larvae and 3 nymphs collected, one nymph tested positive for B. burgdorferi DNA. I. affinis was found co-feeding on birds with imm...
Source: Journal of Medical Entomology - March 8, 2016 Category: Biology Authors: Heller, E. L., Wright, C. L., Nadolny, R. M., Hynes, W. L., Gaff, H. D., Walters, E. L. Tags: Short Communication Source Type: research

Lyme Disease Ticks Reported in Nearly 50% of All US Counties
Lyme disease is transmitted by the blacklegged tick (Ixodes scapularis) and the western blacklegged tick (Ixodes pacificus), and the range of these ticks is spreading, according to research published in the Journal of Medical Entomology.
Source: Disabled World - January 19, 2016 Category: Disability Tags: Lyme Disease Source Type: news

Blacklegged Ticks Found in Half of U.S. Counties
Annapolis, MD; January 19, 2016 -- Lyme disease is transmitted by the blacklegged tick (Ixodes scapularis) and the western blacklegged tick (Ixodes pacificus), and the range of these ticks is spreading, according to research published in the Journal of Medical Entomology. read more
Source: ESA News - January 19, 2016 Category: Biology Authors: rlevine Tags: Press Releases Source Type: research

Ticks that transmit Lyme disease reported in nearly half of all US counties
(Entomological Society of America) Lyme disease is transmitted by the blacklegged tick (Ixodes scapularis) and the western blacklegged tick (Ixodes pacificus), and the range of these ticks is spreading, according to research published in the Journal of Medical Entomology.
Source: EurekAlert! - Social and Behavioral Science - January 18, 2016 Category: Global & Universal Source Type: news

Vector-Borne Diseases in Stray Dogs in Peninsular Malaysia and Molecular Detection of Anaplasma and Ehrlichia spp. from Rhipicephalus sanguineus (Acari: Ixodidae) Ticks
This study was designed to determine the occurrence of vector-borne pathogens in Malaysian stray dogs using serological and molecular approaches. In total, 48 dog blood samples were subjected to serological analysis using SNAP 4Dx kit (IDEXX Laboratories, Westbrook, ME). The presence of Ehrlichia and Anaplasma DNA in the dog blood samples and Rhipicephalus sanguineus (Latreille) ticks was detected using nested polymerase chain reaction assays. Positive serological findings against Ehrlichia canis and Anaplasma phagocytophilum were obtained in 17 (39.5%) and four (9.3%) of 43 dog samples, respectively. None of the dog blood...
Source: Journal of Medical Entomology - January 12, 2016 Category: Biology Authors: Koh, F. X., Panchadcharam, C., Tay, S. T. Tags: Vector-Borne Diseases, Surveillance, Prevention Source Type: research

A tick that feeds on birds may increase the range of Lyme disease
(Entomological Society of America) A tick that is not known to bite people may play a role in the transmission of Lyme disease, according to an article in the Journal of Medical Entomology.
Source: EurekAlert! - Medicine and Health - November 23, 2015 Category: Global & Universal Source Type: news