Crimean-Congo hemorrhagic fever virus in ticks collected from livestock in Albania

被引:15
作者
Papa, Anna [1 ]
Velo, Enkeleda [2 ]
Kadiaj, Perparim [2 ]
Tsioka, Katerina [1 ]
Kontana, Anastasia [1 ]
Kota, Majlinda [2 ]
Bino, Silvia [2 ]
机构
[1] Aristotle Univ Thessaloniki, Sch Med, Dept Microbiol, Thessaloniki 54006, Greece
[2] Inst Publ Hlth, Dept Control Infect Dis, Tirana, Albania
关键词
Crimean-Congo hemorrhagic fever virus; Ticks; Albania; AP92; STRAIN;
D O I
10.1016/j.meegid.2017.08.017
中图分类号
R51 [传染病];
学科分类号
100401 ;
摘要
Albania is a Balkan country endemic for Crimean-Congo hemorrhagic fever (CCHF). It was shown previously that CCHF virus (CCHFV) sequences from Albanian patients cluster into Europe 1 clade. Aim of the present study was to test for CCHFV ticks collected in several regions of Albania, and to determine the genetic lineage(s) of the CCHFV strains in relation with their geographic distribution. A total of 726 ticks (366 Hyalomma marginatum, 349 Rhipicephalus bursa and 11 Rhipicephalus sanguineus) collected from livestock during 2007-2014 were included in the study. Thirty of 215 (13.9%) tick pools were positive for CCHFV. Lineage Europe 1 was detected in H. marginatum ticks collected in the endemic region of Albania, while lineage Europe 2 was detected mainly in R. bursa ticks in various regions of the country. Both genetic lineages were detected in the CCHF endemic area (northeastern Albania), while only Europe 2 lineage was detected in the south of the country. A higher genetic diversity was seen among Europe 2 than Europe 1 Albanian sequences (mean distance 3.7% versus 1%), suggesting a longer evolution of AP92-like strains (Europe 2) in their tick hosts. The present study shows that besides CCHFV lineage Europe 1, lineage Europe 2 is also present in Albania. Combined with results from recent studies, it is concluded that lineage Europe 2 is widely spread in the Balkans and Turkey, and is associated mainly with R. bursa ticks (at least in this region). Its pathogenicity and impact to the public health remain to be elucidated.
引用
收藏
页码:496 / 500
页数:5
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