scholarly journals Differential Transmission of the Genospecies of Borrelia burgdorferi Sensu Lato by Game Birds and Small Rodents in England

1998 ◽  
Vol 64 (4) ◽  
pp. 1169-1174 ◽  
Author(s):  
Klaus Kurtenbach ◽  
Mick Peacey ◽  
Sjoerd G. T. Rijpkema ◽  
Andrew N. Hoodless ◽  
Patricia A. Nuttall ◽  
...  
Keyword(s):  
Borrelia Burgdorferi ◽  
Lyme Borreliosis ◽  
Sensu Stricto ◽  
Rrna Genes ◽  
Borrelia Burgdorferi Sensu Lato ◽  
Internal Organs ◽  
Borrelia Garinii ◽  
Game Birds ◽  
5S Rrna Genes ◽  
Pcr Targeting

ABSTRACT The genetic diversity of Borrelia burgdorferi sensu lato was assessed in a focus of Lyme borreliosis in southern Britain dominated by game birds. Ticks, rodents, and pheasants were analyzed for spirochete infections by PCR targeting the 23S-5S rRNA genes, followed by genotyping by the reverse line blot method. In questingIxodes ricinus ticks, three genospecies of B. burgdorferi sensu lato were detected, with the highest prevalences found for Borrelia garinii and Borrelia valaisiana. B. burgdorferi sensu stricto was rare (<1%) in all tick stages. Borrelia afzelii was not detected in any of the samples. More than 50% of engorged nymphs collected from pheasants were infected with borreliae, mainly B. garinii and/orB. valaisiana. Although 19% of the rodents harboredB. burgdorferi sensu stricto and/or B. gariniiin internal organs, only B. burgdorferi sensu stricto was transmitted to xenodiagnostic tick larvae (it was transmitted to 1% of the larvae). The data indicate that different genospecies of B. burgdorferi sensu lato can be maintained in nature by distinct transmission cycles involving the same vector tick species but different vertebrate host species. Wildlife management may have an influence on the relative risk of different clinical forms of Lyme borreliosis.

scholarly journals Molecular and Pathogenic Characterization of Borrelia burgdorferi Sensu Lato Isolates from Spain

2000 ◽  
Vol 38 (11) ◽  
pp. 4026-4033 ◽  
Author(s):  
Raquel Escudero ◽  
Marta Barral ◽  
Azucena Pérez ◽  
M. Mar Vitutia ◽  
Ana L. García-Pérez ◽  
...  
Keyword(s):  
Borrelia Burgdorferi ◽  
Erythema Migrans ◽  
Sensu Stricto ◽  
Borrelia Burgdorferi Sensu Lato ◽  
Northern Spain ◽  
Internal Organs ◽  
Borrelia Garinii ◽  
Questing Ticks ◽  
Serotype 5

Fifteen Borrelia burgdorferi sensu lato isolates from questing ticks and skin biopsy specimens from erythema migrans patients in three different areas of Spain were characterized. Four different genospecies were found (nine Borrelia garinii, including the two human isolates, three B. burgdorferi sensu stricto, two B. valaisiana, and one B. lusitaniae), showing a diverse spectrum of B. burgdorferi sensu lato species. B. garinii isolates were highly variable in terms of pulsed-field gel electrophoresis pattern and OspA serotype, with four of the seven serotypes described. One of the human isolates was OspA serotype 5, the same found in four of seven tick isolates. The second human isolate was OspA serotype 3, which was not present in ticks from the same area. Seven B. garinii isolates were able to disseminate through the skin of C3H/HeN mice and to cause severe inflammation of joints. One of the two B. valaisianaisolates also caused disease in mice. Only one B. burgdorferi sensu stricto isolate was recovered from the urinary bladder. One isolate each of B. valaisiana and B. lusitaniae were not able to disseminate through the skin of mice or to infect internal organs. In summary, there is substantial diversity in the species and in the pathogenicity of B. burgdorferi sensu lato in areas in northern Spain where Lyme disease is endemic.

scholarly journals Geographical and genospecies distribution of Borrelia burgdorferi sensu lato DNA detected in humans in the USA

2014 ◽  
Vol 63 (5) ◽  
pp. 674-684 ◽  
Author(s):  
Kerry L. Clark ◽  
Brian F. Leydet ◽  
Clifford Threlkeld
Keyword(s):  
Lyme Disease ◽  
Borrelia Burgdorferi ◽  
Skin Biopsy ◽  
Lyme Borreliosis ◽  
Erythema Migrans ◽  
Skin Lesions ◽  
Sensu Stricto ◽  
Borrelia Burgdorferi Sensu Lato ◽  
Southern States ◽  
The Usa

The present study investigated the cause of illness in human patients primarily in the southern USA with suspected Lyme disease based on erythema migrans-like skin lesions and/or symptoms consistent with early localized or late disseminated Lyme borreliosis. The study also included some patients from other states throughout the USA. Several PCR assays specific for either members of the genus Borrelia or only for Lyme group Borrelia spp. (Borrelia burgdorferi sensu lato), and DNA sequence analysis, were used to identify Borrelia spp. DNA in blood and skin biopsy samples from human patients. B. burgdorferi sensu lato DNA was found in both blood and skin biopsy samples from patients residing in the southern states and elsewhere in the USA, but no evidence of DNA from other Borrelia spp. was detected. Based on phylogenetic analysis of partial flagellin (flaB) gene sequences, strains that clustered separately with B. burgdorferi sensu stricto, Borrelia americana or Borrelia andersonii were associated with Lyme disease-like signs and symptoms in patients from the southern states, as well as from some other areas of the country. Strains most similar to B. burgdorferi sensu stricto and B. americana were found most commonly and appeared to be widely distributed among patients residing throughout the USA. The study findings suggest that human cases of Lyme disease in the southern USA may be more common than previously recognized and may also be caused by more than one species of B. burgdorferi sensu lato. This study provides further evidence that B. burgdorferi sensu stricto is not the only species associated with signs and/or symptoms consistent with Lyme borreliosis in the USA.

scholarly journals Prevalence of Borrelia burgdorferi Sensu Lato and Anaplasmataceae Members in Ixodes ricinus Ticks in Alsace, a Focus of Lyme Borreliosis Endemicity in France

2006 ◽  
Vol 72 (4) ◽  
pp. 3074-3078 ◽  
Author(s):  
Elisabeth Ferquel ◽  
Martine Garnier ◽  
Jérôme Marie ◽  
Claire Bernède-Bauduin ◽  
Guy Baranton ◽  
...  
Keyword(s):  
Borrelia Burgdorferi ◽  
Lyme Borreliosis ◽  
Ixodes Ricinus ◽  
Disease Incidence ◽  
Borrelia Burgdorferi Sensu Lato ◽  
Borrelia Garinii ◽  
Peak Density ◽  
Tick Infection ◽  
Ixodes Ricinus Ticks ◽  
Northeastern France

ABSTRACT Due to the high Lyme borreliosis incidence in Alsace, in northeastern France, we investigated in 2003-2004 three cantons in this region in order to determine the density of Ixodes ricinus ticks infected by Borrelia burgdorferi sensu lato and Anaplasmataceae. The peak density of nymphs infected by B. burgdorferi sensu lato at Munster and Guebwiller, where the disease incidence was high, was among the highest reported in Europe (105 and 114 per 100 m2, respectively). In contrast, the peak density of infected nymphs was low in the canton of Dannemarie (5/100 m2), where the disease incidence was low. The two main species detected in ticks were Borrelia afzelii, more frequent in nymphs, and Borrelia garinii, more frequent in adult ticks. The rates of tick infection by Anaplasma phagocytophilum were 0.4% and 1.2% in nymphs and adults, respectively.

scholarly journals Differential Immune Response to the Variable Surface Loop Antigen of P66 of Borrelia burgdorferi Sensu Lato Species in Geographically Diverse Populations of Lyme Borreliosis Patients

2002 ◽  
Vol 9 (6) ◽  
pp. 1382-1384 ◽  
Author(s):  
Katharina Ornstein ◽  
Yngve Östberg ◽  
Jonas Bunikis ◽  
Laila Noppa ◽  
Johan Berglund ◽  
...  
Keyword(s):  
Immune Response ◽  
Membrane Protein ◽  
Borrelia Burgdorferi ◽  
Lyme Borreliosis ◽  
Sensu Stricto ◽  
Borrelia Burgdorferi Sensu Lato ◽  
Diverse Populations ◽  
Surface Loop ◽  
Loop Region ◽  
Variable Surface

ABSTRACT We have studied the immune response to a variable surface-exposed loop region of the P66 outer membrane protein from Borrelia burgdorferi sensu lato by using an enzyme immunoassay. Lyme borreliosis populations found in North America and Sweden were preferentially more seroreactive to P66 from their respective regional species, namely, B. burgdorferi sensu stricto and B. garinii and B. afzelii, respectively.

Prevalence of Borrelia Burgdorferi Sensu Lato Genomospecies and of the Human Granulocytic Ehrlichiosis (HGE) Agent in Ixodes Ricinus Ticks Collected in the Area of Monti Lepini, Italy

2003 ◽  
Vol 16 (2) ◽  
pp. 105-108 ◽  
Author(s):  
I. Santino ◽  
A. Iori ◽  
M. Nicoletti ◽  
S. Valletta ◽  
C. Cimmino ◽  
...  
Keyword(s):  
Borrelia Burgdorferi ◽  
Pcr Amplification ◽  
Sensu Stricto ◽  
16S Rrna Genes ◽  
Rrna Genes ◽  
Borrelia Burgdorferi Sensu Lato ◽  
Granulocytic Ehrlichiosis ◽  
Ehrlichia Phagocytophila ◽  
Human Granulocytic Ehrlichiosis ◽  
Ixodes Ricinus Ticks

Ticks are obligate hematophagous arthropods that are parasites in every class of vertebrates in most regions of the world. They are also considered to be important vectors for the transmission of human infectious diseases. In the present study we used polymer chain reaction (PCR) amplification analysis to determine the prevalence of Borrelia burgdorferi and Ehrlichia phagocytophila, the agents of, respectively, Lyme borreliosis and human granulocytic ehrlichiosis, among ticks inhabiting the area of Monti Lepini, a wild area located in the Latium Region of Italy. A total of 141 I. ricinus ticks (125 nymphs and 16 adults) were collected in the studied area. Total DNAs were extracted from I. ricinus nymphs (pooled in groups of five) and from individual adults. The DNA samples were examined for the presence of B. burgdorferi sensu lato and E. phagocytophila by PCR using two specific pairs of oligonucleotides that specifically amplify distinct DNA regions of the 16S rRNA genes of the two species. The prevalence of vectors infected with B. burgdorferi s. 1. was 16% in pooled nymphs samples, and 12.5% in adult ticks, while E. phagocytophila was found only in pooled nymphs samples (8%). Three genomospecies were identified, namely Borrelia afzelii, Borrelia garinii, and Borrelia valaisiana, in samples found positive for B. burgdorferi s. 1. No sample was found positive for Borrelia burgdorferi sensu stricto.

scholarly journals A broad-range survey of Borrelia burgdorferi sensu lato infection in small mammals in Yunnan Province, China

2020 ◽  
Author(s):  
Zhihai He ◽  
Baogui Jiang ◽  
Zihou Gao ◽  
Zongti Shao ◽  
Yun Zhang ◽  
...  
Keyword(s):  
Borrelia Burgdorferi ◽  
Small Mammals ◽  
Yunnan Province ◽  
23S Rrna ◽  
Borrelia Burgdorferi Sensu Lato ◽  
Tropical Region ◽  
Prevalence Rates ◽  
High Genetic Diversity ◽  
Landscape Types ◽  
Pcr Targeting

Abstract Background: Lyme disease, caused by Borrelia burgdorferi sensu lato (BBSL), is commonly found in wild and domestic mammals worldwide. In China, human cases of B. burgdorferi infections have been identified across a wide distribution, but little direct surveillance of potential small mammal reservoirs has been performed in Yunnan Province, a tropical region in southwestern China. Here we report a thorough investigation of BBSL in small mammals collected from 2011 to 2016 from this region.Methods: Small mammals were captured using snap traps in 23 counties located in Yunnan Province. DNA was extracted from spleen tissue using DNA blood and tissue kits. A nested PCR targeting the 5S-23S rRNA intergenic spacer gene of BBSL was used for pathogen detection. Amplicons of 252bp expected sizes were sequenced directly and analyzed using BLAST algorithm. A phylogenetic tree was constructed using MEGA software and statistical analysis were conducted using SPSS version 17.0.Results: Overall, 3659 mammals belonging to 57 species were captured at 159 sample sites located in 23 counties in Yunnan Province. Borrelia burgdorferi s.l. was found in 146 mammals (3.99%), from 30 different species, 20 of which represent the first reported detection in that species. Sequence analysis revealed five genotypes of B. burgdorferi s.l., including B. afzelii, B. burgdorferi sensu stricto, B. japonica, B. garinii and B. valaisiana.Conclusions: Significant differences in prevalence rates of BBSL were observed at varying landscape types and altitudes. Small mammals in forested areas had higher prevalence rates than other landscape types, as did small mammals found at altitudes greater than 2500 meters. The five genotypes of BBSL detected, suggests high genetic diversity within this province.

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