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Infectious Disease: Lyme Disease

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Total 41 results found since Jan 2013.

Seasonal Activity, Density, and Collection Efficiency of the Blacklegged Tick (Ixodes scapularis) (Acari: Ixodidae) in Mid-Western Pennsylvania
Although Pennsylvania has recently reported the greatest number of Lyme disease cases in the United States, with the largest increase for PA occurring in its western region, the population biology of the blacklegged tick (Ixodes scapularis Say) has not been adequately characterized in western PA. We studied the seasonal activity of host-seeking I. scapularis larvae, nymphs, and adults in mid-western PA over the course of a year, including a severe winter, and determined their absolute densities and collection efficiencies using replicated mark-release-recapture or removal methods. Our results are compared to those from sim...
Source: Journal of Medical Entomology - November 5, 2015 Category: Biology Authors: Simmons, T. W., Shea, J., Myers-Claypole, M. A., Kruise, R., Hutchinson, M. L. Tags: Population and Community Ecology Source Type: research

Distribution and Habitat of Ixodes pacificus (Acari: Ixodidae) and Prevalence of Borrelia burgdorferi in Utah
Knowledge about the distribution and abundance of the western black-legged tick, Ixodes pacificus Cooley and Kohls, in Utah is limited. Recent concerns over tick-borne diseases in Utah, primarily Lyme disease, have reinvigorated the need to understand the distribution and habitats favored by this tick species. We surveyed 157 sites throughout Utah to examine the distribution, abundance, and habitat of I. pacificus. In total, 343 adult ticks were collected from 2011 to 2013. Specifically, 119 I. pacificus, 217 Dermacentor andersoni Stiles, six D. albipictus Packard, and one D. hunteri Bishopp were collected. Overall, tick a...
Source: Journal of Medical Entomology - November 5, 2015 Category: Biology Authors: Davis, R. S., Ramirez, R. A., Anderson, J. L., Bernhardt, S. A. Tags: Short Communications Source Type: research

Concern about rise in UK Lyme disease cases
"Surging numbers of people are being diagnosed with Lyme disease as cases spread from rural areas to the suburbs," the Daily Mail reports. The ongoing rise in Lyme disease cases in the UK – thought to be driven by climate change, leading to warmer winters – has been known by public health officials for some time. Reported cases in England and Wales rose from 268 in 2001 to 959 in 2011, but the true figure is thought be much higher. Current estimates put the actual figure at around 3,000 cases a year in England and Wales.It may also be the case that the disease is, as the Mail puts it, "moving into t...
Source: NHS News Feed - October 12, 2015 Category: Consumer Health News Tags: Medical practice QA articles Source Type: news

Ticks Carrying Lyme Disease Found in London
Visitors to two popular parks in South London are at risk of coming into contact with ticks that can transmit Lyme disease to humans, according to new research published in Medical and Veterinary Entomology.
Source: Disabled World - October 10, 2015 Category: Disability Tags: Lyme Disease Source Type: news

Researchers find ticks linked with Lyme disease in south London parks
(Wiley) Visitors to two popular parks in South London are at risk of coming into contact with ticks that can transmit Lyme disease to humans, according to a new study in Medical and Veterinary Entomology.
Source: EurekAlert! - Infectious and Emerging Diseases - September 24, 2015 Category: Infectious Diseases Source Type: news

American Black Bears as Hosts of Blacklegged Ticks (Acari: Ixodidae) in the Northeastern United States
Ticks and whole blood were collected from American black bears (Ursus americanus Pallas) between October 2011 and October 2012 across four counties in northwestern New Jersey, an area where blacklegged ticks (Ixodes scapularis Say) and their associated tick-borne pathogens are prevalent. Adult American dog ticks (Dermacentor variabilis Say) were the most frequently collected tick species in late spring, whereas adult and nymphal blacklegged ticks were found in both the late spring and fall months. Additionally, for blacklegged ticks, we determined the quality of bloodmeals that females acquired from black bears compared wi...
Source: Journal of Medical Entomology - September 11, 2015 Category: Biology Authors: Zolnik, C. P., Makkay, A. M., Falco, R. C., Daniels, T. J. Tags: Vector/Pathogen/Host Interaction, Transmission Source Type: research

Tick abundances in South London parks and the potential risk for Lyme borreliosis to the general public
Abstract Tick abundances and prevalences of infection with Borrelia burgdorferi sensu lato, the causative agent of Lyme disease, were investigated in four South London parks. A total of 360 transects were sampled using three methods of collection (blanket, leggings and flags) simultaneously. No ticks were found on Wimbledon Common or at Hampton Court, but 1118 Ixodes ricinus (Ixodida: Ixodidae) ticks were collected at Richmond and Bushy Parks. At Richmond Park, lower canopy humidity [odds ratio (OR) 0.94; P = 0.005], increased mat depth (OR 1.15; P < 0.001) and increased soil moisture (OR 1.40; P = 0.001) predicted the ...
Source: Medical and Veterinary Entomology - September 1, 2015 Category: Veterinary Research Authors: C. NELSON, S. BANKS, C. L. JEFFRIES, T. WALKER, J. G. LOGAN Tags: Short Communication Source Type: research

Borrelia burgdorferi sensu lato and co‐infections with Anaplasma phagocytophilum and Rickettsia spp. in Ixodes ricinus in Hamburg, Germany
Abstract To obtain initial data on Borrelia burgdorferi sensu lato (Spirochaetales: Spirochaetaceae) in Ixodes ricinus (Ixodida: Ixodidae) ticks in Hamburg, Germany, 1400 questing ticks were collected by flagging at 10 different public recreation areas in 2011 and analysed using probe‐based quantitative real‐time polymerase chain reaction. The overall rate of infection with B. burgdorferi s.l. was 34.1%; 30.0% of adults were infected (36.7% of females and 26.0% of males), as were 34.5% of nymphs. Significant differences in tick infection rates were observed between the spring and summer/autumn months, as well as among ...
Source: Medical and Veterinary Entomology - June 19, 2015 Category: Veterinary Research Authors: K. MAY, D. JORDAN, V. FINGERLE, C. STRUBE Tags: Short Communication Source Type: research

Borrelia burgdorferi sensu lato and co‐infections with Anaplasma phagocytophilum and Rickettsia spp. in Ixodes ricinus in Hamburg, Germany
Abstract To obtain initial data on Borrelia burgdorferi sensu lato (Spirochaetales: Spirochaetaceae) in Ixodes ricinus (Ixodida: Ixodidae) ticks in Hamburg, Germany, 1400 questing ticks were collected by flagging at 10 different public recreation areas in 2011 and analysed using probe‐based quantitative real‐time polymerase chain reaction. The overall rate of infection with B. burgdorferi s.l. was 34.1%; 30.0% of adults were infected (36.7% of females and 26.0% of males), as were 34.5% of nymphs. Significant differences in tick infection rates were observed between the spring and summer/autumn months, as well as amon...
Source: Medical and Veterinary Entomology - June 1, 2015 Category: Veterinary Research Authors: K. MAY, D. JORDAN, V. FINGERLE, C. STRUBE Tags: Short Communication Source Type: research

Reducing deer populations may reduce risk of Lyme disease
(Entomological Society of America) After a 13-year study was conducted, researchers in Connecticut have found that reduced deer populations can lead to a reduction in Lyme disease cases. The results of their study are published in the Journal of Medical Entomology.
Source: EurekAlert! - Infectious and Emerging Diseases - July 1, 2014 Category: Infectious Diseases Source Type: news

Tick-borne infections of animals and humans: a common ground.
Abstract A wide variety of pathogens is transmitted from ticks to vertebrates including viruses, bacteria, protozoa and helminths. of which most have a life cycle that requires passage through the vertebrate host. Tick-borne infections of humans, farm and companion animals are essentially associated with wildlife animal reservoirs. While some flying insect-borne diseases of humans such as malaria, filariasis and Kala Azar caused by Leishmania donovani target people as their main host, major tick-borne infections of humans, although potentially causing disease in large numbers of individuals, are typically an infri...
Source: International Journal for Parasitology - May 15, 2014 Category: Parasitology Authors: Baneth G Tags: Int J Parasitol Source Type: research