Ticks and tick-borne pathogens in South Bohemia (Czech Republic) – Spatial variability in Ixodes ricinus abundance, Borrelia burgdorferi and tick-borne encephalitis virus prevalence

The most of ixodes ticks in Tula region belongs to the group of pasture mites. It is generally accepted to estimate the tick’s contamination by the tick-borne encephalitis virus and raoueti inducing Lyme Borellia. The aim of the present work was to educe the aetiologic agents of the set of potentially-enable infections out of ticks Dermacentor reticulatus, Ixodes ricinus and Ixodes сrenulatus collected at the different terrains of Tula Region by PCR method. The results: a considerable number of pathogenic rickettsiae R. raoultii was educes from the ticks D. reticulatus, which including them as the component of mixed infection together with the human monocytic ehrlichiosis agent. R. raoultii was determined in more than a half of the cases in ticks I. ricinus including the mixed infection together with ticks’ borreliosis virus and Kemerovo fever agent. Conclusion. The reasons, induced the quantity changes of the ticks’ distribution at Tula Region terrains, apparently promote the rise in frequency of the ticks contamination with the agents of herd tick-transmissive infection. It demand an infectiologist’s attention rise and dictate the necessity of the above mentioned diseases monitoring as well as Fr. tularensis, the tick-borne encephalitis virus and Lyme disease.

Download Full-text

Real-Time PCR studies regarding the borrelia burgdorferi, francisella tularensis, tick borne encephalitis virus (TBEv) and crimeean congo hemorrhagic fever virus (CCHFv) occurrence in the Romanian ticks

International Journal of Infectious Diseases ◽

10.1016/j.ijid.2016.02.448 ◽

2016 ◽

Vol 45 ◽

pp. 193-194 ◽

Cited By ~ 1

Author(s):

A. Vladimirescu ◽

G. Dumitrescu ◽

L. Ionescu ◽

M. Necsulescu ◽

V. Moraru ◽

...

Keyword(s):

Borrelia Burgdorferi ◽

Real Time ◽

Francisella Tularensis ◽

Real Time Pcr ◽

Hemorrhagic Fever ◽

Encephalitis Virus ◽

Fever Virus ◽

Hemorrhagic Fever Virus ◽

Tick Borne Encephalitis ◽

Tick Borne Encephalitis Virus

Download Full-text

Relation of genetic phylogeny and geographical distance of tick-borne encephalitis virus in central Europe

Journal of General Virology ◽

10.1099/vir.0.032417-0 ◽

2011 ◽

Vol 92 (8) ◽

pp. 1906-1916 ◽

Cited By ~ 20

Author(s):

M. Weidmann ◽

D. Růžek ◽

K. Křivanec ◽

G. Zöller ◽

S. Essbauer ◽

...

Keyword(s):

Czech Republic ◽

Central Europe ◽

Encephalitis Virus ◽

Natural Focus ◽

The Czech Republic ◽

Tick Borne Encephalitis ◽

Disease Pattern ◽

The Central Nervous System ◽

Tick Borne Encephalitis Virus ◽

First Time

Tick-borne encephalitis virus (TBEV) is the most important arboviral agent causing disease of the central nervous system in central Europe. In this study, 61 TBEV E gene sequences derived from 48 isolates from the Czech Republic, and four isolates and nine TBEV strains detected in ticks from Germany, covering more than half a century from 1954 to 2009, were sequenced and subjected to phylogenetic and Bayesian phylodynamic analysis to determine the phylogeography of TBEV in central Europe. The general Eurasian continental east-to-west pattern of the spread of TBEV was confirmed at the regional level but is interlaced with spreading that arises because of local geography and anthropogenic influence. This spread is reflected by the disease pattern in the Czech Republic that has been observed since 1991. The overall evolutionary rate was estimated to be approximately 8×10−4 substitutions per nucleotide per year. The analysis of the TBEV E genes of 11 strains isolated at one natural focus in Žďár Kaplice proved for the first time that TBEV is indeed subject to local evolution.

Download Full-text