scholarly journals Adult Hyalomma marginatum tick positive for Rickettsia aeschlimannii in Austria, October 2018

2018 ◽  
Vol 23 (48) ◽  
Author(s):  
Georg Gerhard Duscher ◽  
Adnan Hodžić ◽  
Peter Hufnagl ◽  
Walpurga Wille-Piazzai ◽  
Anna-Magarita Schötta ◽  
...  
Keyword(s):  
Tick Species ◽  
Migratory Birds ◽  
Fever Virus ◽  
Northern Europe ◽  
Haemorrhagic Fever ◽  
Potential Threat ◽  
Hyalomma Marginatum ◽  
Crimean Congo Haemorrhagic Fever ◽  
Rickettsia Aeschlimannii

We report on a non-indigenous adult Hyalomma marginatum tick in Austria carrying the human pathogenic Rickettsia aeschlimannii; presumably introduced as a nymph via migratory birds and completed the moulting within the same year. It was negative for Crimean-Congo haemorrhagic fever virus, but the finding of R. aeschlimannii represents a potential threat for humans due to its zoonotic character. Awareness of invasive tick species and carried pathogens should be improved in central and northern Europe.

scholarly journals Absence of Crimean-Congo haemorrhagic fever virus in the tick Hyalomma aegyptium parasitizing the spur-thighed tortoise (Testudo graeca) in Tunisia

Parasite ◽  
2019 ◽  
Vol 26 ◽  
pp. 35 ◽  
Author(s):  
Wasfi Fares ◽  
Khalil Dachraoui ◽  
Chawki Najjar ◽  
Hend Younsi ◽  
Stephen Findlay-Wilson ◽  
...  
Keyword(s):  
Tick Species ◽  
Fever Virus ◽  
Haemorrhagic Fever ◽  
Northern Tunisia ◽  
Testudo Graeca ◽  
Infestation Intensity ◽  
Main Host ◽  
Crimean Congo Haemorrhagic Fever ◽  
High Degree ◽  
Free Ranging

Free-ranging spur-thighed tortoises Testudo graeca, captured in different habitat types of Northern Tunisia from March to April 2017, were examined for tick infestation: 134/147 (91%) were infested. The overall infestation intensity and abundance was 8.5 and 7.8, respectively. From these tortoises, 1174 ticks were collected, of which 10% (n = 120) taken from 18 randomly-selected tortoises were identified at the species level; the remaining ticks were examined for the presence of Crimean-Congo haemorrhagic fever virus (CCHFv) by real time RT-PCR. Only adult Hyalomma aegyptium were found, suggesting a high degree of host specificity to tortoises. No CCHFv was detected in ticks. Considering the absence of CCHFv in Hyalomma aegyptium infesting its main host, the spur-thighed tortoise, this tick species is unlikely to play a major role in the epidemiology of CCHF. Therefore, more studies are needed to investigate the circulation of this arbovirus between livestock and other tick species from North Africa.

scholarly journals Monitoring for the possible introduction of Crimean-Congo haemorrhagic fever virus in Italy based on tick sampling on migratory birds and serological survey of sheep flocks

2018 ◽  
Vol 149 ◽  
pp. 47-52 ◽  
Author(s):  
Claudio De Liberato ◽  
Raffaele Frontoso ◽  
Adele Magliano ◽  
Alessandro Montemaggiori ◽  
Gian Luca Autorino ◽  
...  
Keyword(s):  
Migratory Birds ◽  
Fever Virus ◽  
Haemorrhagic Fever ◽  
Serological Survey ◽  
Crimean Congo Haemorrhagic Fever

scholarly journals DETECTION AND GENETIC CHARACTERISTICS OF RNA ISOLATES OF CRIMEAN-CONGO HAEMORRHAGIC FEVER VIRUS FROM THE HYALOMMA MARGINATUM TICKS COLLECTED IN THE ASTRAKHAN REGION (2016)

2017 ◽  
Vol 22 (5) ◽  
pp. 248-253
Author(s):  
Elena V. Vakalova ◽  
A. S Volynkina ◽  
E. S Kotenev ◽  
L. N Kulikova ◽  
N. V Viktorova
Keyword(s):  
Infection Rate ◽  
Genetic Variant ◽  
Fever Virus ◽  
Viral Resistance ◽  
Haemorrhagic Fever ◽  
Rt Pcr ◽  
Genetic Characteristics ◽  
Hyalomma Marginatum ◽  
Cchf Virus ◽  
Crimean Congo Haemorrhagic Fever

1,746 specimens of H. marginatum ticks collected in the Astrakhan region were examined by RT-PCR, their infection rate with CCHF virus amounted to 1.5%. This is comparable with results of earlier studies performed in different years in the Astrakhan and Rostov regions and testified to such indices of viral resistance as 0.1; 0.9; 2.4; 0.6; 0.9 and 2.3%. As a result of sequencing of fragments of the genome (fourteen of the 26 isolates of RNA, they refer to the genotype Europe-1. Seven out of 14 isolates belong to the subtype Va Stavropol-Rostov-Astrakhan, two represent the reassortant genetic variant S-Vc; M-Vb; L-Va.

scholarly journals Presence of antibodies to Crimean Congo haemorrhagic fever virus in sheep in Tunisia, North Africa

2021 ◽  
Author(s):  
Médiha Khamassi Khbou ◽  
Rihab Romdhane ◽  
Faten Bouaicha Zaafouri ◽  
Mohsen Bouajila ◽  
Limam Sassi ◽  
...  
Keyword(s):  
North Africa ◽  
Fever Virus ◽  
Haemorrhagic Fever ◽  
Crimean Congo Haemorrhagic Fever
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