Оценка климатогенной угрозы распространения таежного клеща Ixodes persulcatus на территории России и соседних стран в начале XXI века

2021 ◽  
Vol 85 (2) ◽  
pp. 231-237
Author(s):  
И. О. Попов ◽  
С. М. Семенов ◽  
Е. Н. Попова
Keyword(s):  
Ixodes Persulcatus

TBE in China

2020 ◽  
Keyword(s):  
Western China ◽  
Ixodes Persulcatus ◽  
West China ◽  
North West ◽  
Haemaphysalis Concinna ◽  
Viral Subtype ◽  
Japanese Military ◽  
Natural Foci ◽  
Far Eastern ◽  
The Brain

The first TBE patients in China were reported in 1943, and the TBEV was isolated from the brain tissues of 2 patients in 1944 by Japanese military scientists,1 and from patients and ticks (Ixodes persulcatus and Haemaphysalis concinna) in 1952 by Chinese researchers.2 The Far Eastern viral subtype (TBEV-FE) is the endemic subtype that has been isolated from all 3 known natural foci (northeastern China, western China, and southwestern China).14 Recently a new “Himalayan subtype” of the TBEV (TBEV-HIM) was isolated from wild rodent Marmoata himalayana in the Qinghai-Tibet Plateau15. The main vector of the TBEV in China is I. persulcatus.3 One recent report suggests that the TBEV-SIB is prevalent in the Uygur region (North West China)13 but epidemiological modelling indicates that the TBEV may occur even widely all over China (Figure 3).4 Likely, the disease is often missed by clinicians due to a lack of the availability of specific diagnostic assays16.

A human case of tick bite by Ixodes persulcatus

1998 ◽  
Vol 36 (1) ◽  
pp. 63 ◽  
Author(s):  
K Im ◽  
I Y Lee ◽  
W J Lee
Keyword(s):  
Human Case ◽  
Tick Bite ◽  
Ixodes Persulcatus

scholarly journals Isolation of spotted fever group rickettsiae from Ixodes persulcatus ticks in the central part of Hokkaido, Japan

2000 ◽  
Vol 51 (1) ◽  
pp. 55-58 ◽  
Author(s):  
Hiromi FUJITA ◽  
Nobuhiro TAKADA ◽  
Emiko ISOGAI ◽  
Yuriko WATANABE ◽  
Takuya ITO
Keyword(s):  
Spotted Fever ◽  
Ixodes Persulcatus ◽  
Spotted Fever Group ◽  
Spotted Fever Group Rickettsiae

scholarly journals Classification of Tick Species and Detection of Tick-borne Pathogens in Yanbian, China

2020 ◽  
Author(s):  
Jixu Li ◽  
Shuang Zhang ◽  
Wanfeng Liang ◽  
Shaowei Zhao ◽  
Hao Wang ◽  
...  
Keyword(s):  
Polymerase Chain Reaction ◽  
North Korea ◽  
Tick Species ◽  
Spotted Fever ◽  
Ixodes Persulcatus ◽  
Spotted Fever Group ◽  
Haemaphysalis Longicornis ◽  
Chain Reaction ◽  
Polymerase Chain ◽  
Severe Fever

Abstract BackgroundYanbian is located at the junction between China, Russia, and North Korea. We aimed to determine the species distribution and pathogens carried by ticks in Yanbian.MethodsA total of 2673 unattached ticks were collected from eight counties and cities in Yanbian and classified morphologically. Candidatus Rickettsia tarasevichiae (CRT), spotted fever group Rickettsia (SFGR), severe fever thrombocytopenia syndrome virus (SFTSV), Theileria, and other pathogens were detected using polymerase chain reaction (PCR) and real-time quantitative polymerase chain reaction followed by phylogenetic and genotypic analyses.ResultsAccording to the morphological classification, the main tick species in Yanbian were Haemaphysalis longicornis, Ixodes persulcatus, Dermacentor silvarum, Haemaphysalis japonica, and Haemaphysalis concinna. Candidatus Rickettsia tarasevichiae, spotted fever group Rickettsia, severe fever thrombocytopenia syndrome virus, and Theileria orientalis were detected in H. longicornis, Candidatus Rickettsia tarasevichiae, spotted fever group Rickettsia, and severe fever thrombocytopenia syndrome virus were detected in I. persulcatus, H. japonica, and D. silvarum, but only severe fever thrombocytopenia syndrome virus was detected in H. concinna. Mixed infection with Candidatus Rickettsia tarasevichiae and severe fever thrombocytopenia syndrome virus was found in I. persulcatus and H. japonica. The gene sequences of all tested pathogens exhibited 95.7%–100% homology with sequences registered in GenBank. Phylogenetic analysis showed that different spotted fever group Rickettsia and severe fever thrombocytopenia syndrome virus genotypes were closely related to the Korean strains. We provide the first evidence for the presence of the spotted fever group Rickettsia genotypes of Candidatus Rickettsia longicornii, ompA, ompB, sca4, and rrs, in Haemaphysalis longicornis in Yanbian. ConclusionsThese results provide epidemiological data to support the prevention and control of ticks and tick-borne diseases in the border areas of China, North Korea, and Russia.

scholarly journals Rickettsia spp. in rodent-attached ticks and first evidence of Spotted fever Group Rickettsia species Candidatus Rickettsia uralica in Europe.

2020 ◽  
Author(s):  
Maria Vikentjeva ◽  
Julia Geller ◽  
Jaanus Remm ◽  
Irina Golovljova
Keyword(s):  
Spotted Fever ◽  
Ixodid Ticks ◽  
Distribution Area ◽  
Myodes Glareolus ◽  
Ixodes Persulcatus ◽  
Spotted Fever Group ◽  
Human Pathogens ◽  
Rickettsia Species ◽  
Questing Ticks ◽  
Spotted Fever Group Rickettsia

Abstract BACKGROUND Rickettsia spp. are human pathogens that cause a number of diseases and are transmitted by arthropods, including ixodid ticks. Estonia contributes a region, where the distribution area of two exophilic tick species of known medical importance, Ixodes persulcatus and I. ricinus, overlap. The presence of the nidicolous rodent-associated I. trianguliceps has recently been shown for Estonia. Although there is no Estonian data available on human disease caused by tick-borne Rickettsia spp., the presence of three Rickettsia species in non-nidicolous ticks, albiet at very dissimilar rates, was also previously reported. The aim of this studywas to screen, identify and characterize Rickettsia species in nidicolous and non-nidicolous ticks attached to rodents. RESULTS Nymphs and larvae of I. ricinus ( n = 1004), I . persulcatus ( n = 75) and I. trianguliceps ( n = 117) attached to rodents and shrews caught in different parts of Estonia were studied for the presence of Rickettsia spp. by nested PCR. Ticks were removed from 314 small animals of 5 species (bank voles Myodes glareolus , yellow necked mice Apodemus flavicollis , striped field mice A. agrarius, pine voles M. subterranius and common shrews S. araneus) . Rickettsial DNA was detected in 8,7% (103/1186) studied ticks. In addition to R. helvetica, previously found in questing ticks, this study reports the first identification of the recently described I. trianguliceps- associated Candidatus R. uralica in west of the Ural.

Sign in / Sign up

Export Citation Format

Share Document