Factors responsible for Ixodes ricinus nymph abundance: are soil features indicators of tick abundance in a French region where Lyme borreliosis is endemic?

This study shows that humus type can be indicative of nymph abundance. Three types of humus were observed: (1) moder, (2) mull, and (3) mull-moder humus. One of them, moder humus, which is characterized by a thick layer of fragmented leaves, was found in multivariate analyses to be strongly associated with the nymph abundance. This study demonstrates that factors such as saturation deficit do not suffice to explain the differences in nymph abundance among sites. The composition of the soil and especially the type of humus should also be taken into consideration when assessing acarological risk.
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research

Related Links:

Lyme disease (LD) is an increasing public health problem. Current laboratory testing is insensitive in early infection, the stage at which appropriate treatment is most effective in preventing disease sequelae. The Lyme Disease Biobank (LDB) collects samples from individuals with symptoms consistent with early LD presenting with or without erythema migrans (EM) or an annular, expanding skin lesion and uninfected individuals from areas of endemicity. Samples were collected from 550 participants (298 cases and 252 controls) according to institutional review board-approved protocols and shipped to a centralized biorepository....
Source: Journal of Clinical Microbiology - Category: Microbiology Authors: Tags: Immunoassays Source Type: research
Lyme borreliosis is a tick-borne disease caused by the Borrelia burgdorferi sensu lato complex. Bio-Rad Laboratories has developed a fully automated multiplex bead-based assay for the detection of IgM and IgG antibodies to B. burgdorferi. The BioPlex 2200 Lyme Total assay exhibits an improved rate of seropositivity in patients with early Lyme infection. Asymptomatic subjects from endemic and nonendemic origins demonstrated a seroreactivity rate of approximately 4% that was similar to other commercial assays evaluated in this study. Coupled to this result was the observation that the Lyme Total assay retained a high first-t...
Source: Journal of Clinical Microbiology - Category: Microbiology Authors: Tags: Immunoassays Source Type: research
Conclusions: This study found a high incidence of Lyme disease in Lithuania. We elucidated the baseline characteristics regarding the infected Lithuanian population which may ease medical clinicians' work on new Lyme diagnoses. PMID: 32151097 [PubMed - in process]
Source: Medicina (Kaunas) - Category: Universities & Medical Training Authors: Tags: Medicina (Kaunas) Source Type: research
CONCLUSIONS: This review has concentrated on I scapularis-transmitted diseases affecting the Upper Midwest and has explored the ecology of the I scapularis vector and its role in pathogen transmission. PMID: 32348066 [PubMed - in process]
Source: WMJ - Category: General Medicine Authors: Tags: WMJ Source Type: research
Abstract Ixodes scapularis is currently known to transmit 7 pathogens responsible for Lyme disease, anaplasmosis, babesiosis, tick-borne relapsing fever, ehrlichiosis, and Powassan encephalitis. Ixodes scapularis can also be colonized by endosymbiotic bacteria including those in the genus of Rickettsia. We screened 459 I. scapularis ticks submitted to the Connecticut Agricultural Experiment Station Tick Testing Laboratory with the objectives to (1) examine differences in infection prevalence of Borrelia burgdorferi, Anaplasma phagocytophilum, Babesia microti, and Borrelia miyamotoi, (2) evaluate whether prevalence...
Source: The Journal of Parasitology - Category: Parasitology Authors: Tags: J Parasitol Source Type: research
This study presented examples of base-calling DNA sequencing electropherograms routinely generated in a clinical diagnostic laboratory on DNA extracts of human blood specimens and ticks collected from human skin bites and from the environment. Since some of the tick samples tested were collected in Ireland, borrelial species or strains not known to exist in the United States were also detected by analysis of this 16S rRNA “core genome”. We recommend that hospital laboratories located in Lyme disease endemic areas begin to use a “core genome” sequencing test to routinely diagnose spir...
Source: International Journal of Environmental Research and Public Health - Category: Environmental Health Authors: Tags: Article Source Type: research
Publication date: Available online 14 December 2018Source: Ticks and Tick-borne DiseasesAuthor(s): George Psevdos, Teresa Khoo, Robert Chow, Christopher L Romano, Scott CampbellAbstractIn North America, Lyme disease (LD) is caused predominantly by the spirochete Borrelia burgdorferisensu stricto, and is transmitted by blacklegged ticks. Long Island, New York, is highly endemic for the disease. The C6 peptide (C6P) is currently used as a screening test for LD in our institution. Our objective was to examine how screening with C6P concorded with diagnosis of LD at the Veterans Affairs Medical Center, Northport, Long Island. ...
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
This study shows that humus type can be indicative of nymph abundance. Three types of humus were observed: (1) moder, (2) mull, and (3) mull-moder humus. One of them, moder humus, which is characterized by a thick layer of fragmented leaves, was found in multivariate analyses to be strongly associated with the nymph abundance. This study demonstrates that factors such as saturation deficit do not suffice to explain the differences in nymph abundance among sites. The composition of the soil and especially the type of humus should also be taken into consideration when assessing acarological risk.
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
Conclusions This study confirms that subclinical Borrelia seroconversion is common in south-eastern Sweden. The findings further suggest that male sex, younger age together with B. gariniii induced levels of IL-10, IL-17A and CCL20 may be associated with a subclinical course.
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
Publication date: Available online 15 December 2017 Source:Ticks and Tick-borne Diseases Author(s): Andrea Egizi, Vivien Roegner, Ary Faraji, Sean P. Healy, Terry L. Schulze, Robert A. Jordan Historical specimens, when available, can provide new insight into the distribution and evolution of pathogens that may not be discernible from more recent samples. We used ticks collected from hunter-killed white-tailed deer in New Jersey in 2002 to examine the prevalence and distribution of four pathogens transmitted by Ixodes scapularis, the blacklegged tick. Infection with Borrelia burgdorferi sensu stricto, Babesia microti, and ...
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
More News: Borrelia | Endemics | Environmental Health | France Health | Lyme Disease | Study | Tickborne Diseases | Zoology