Laboratory of Medical parasitology, Stavropol Research Anti-Plague Institute, Stavropol, 13-15 Sovetskaya Str., Stavropol 355035, Russian Federation.
Laboratory of Medical parasitology, Stavropol Research Anti-Plague Institute, Stavropol, 13-15 Sovetskaya Str., Stavropol 355035, Russian Federation.
Ticks Tick Borne Dis. 2022 Mar;13(2):101890. doi: 10.1016/j.ttbdis.2021.101890. Epub 2021 Dec 20.
Crimean-Congo hemorrhagic fever (CCHF) has a central role among tick-borne infections in southern Russia. Multiple cases of disease are recorded annually in most regions with the СCHF foci; moreover, an expansion of the geographic range of the disease has been noted. Since 1999, more than 2300 people have fallen ill in Russia. Ticks are the main vectors and reservoirs of the Crimean-Congo hemorrhagic fever virus (CCHFV). As it is currently known, CCHFV has been detected in ticks of 33 species. In the period 2012-2019 in the south of the European part of Russia, more than 38,000 ticks of 14 species of the genera Hyalomma, Rhipicephalus, Dermacentor, Haemaphysalis and Ixodes were tested for the presence of CCHFV. Among 4,188 tick pools studied, the virus was detected in 252 (6%). The main vector, as expected, is H. marginatum (81% of positive pools). The same species is the most numerous among the studied ticks (66%). Apart from H. marginatum, the virus was detected in the following species: H. scupense, R. rossicus, R. turanicus, R. bursa, R. annulatus, D. marginatus, Haem. punctata and Ixodes ricinus. Most of the positive results were obtained from ticks collected from vertebrate hosts. As for H. marginatum, R. rossicus, D. marginatus, and Haem. punctata, the virus was detected in questing unfed specimens collected from vegetation and soil surface, which indicates the participation of these ticks in the circulation of the virus.
克里米亚-刚果出血热（CCHF）在俄罗斯南部的蜱传感染中占据核心地位。在大多数有 CCHF 焦点的地区，每年都会记录到多个疾病病例；此外，疾病的地理范围也有所扩大。自 1999 年以来，俄罗斯已有超过 2300 人患病。蜱是克里米亚-刚果出血热病毒（CCHFV）的主要传播媒介和储存宿主。据目前所知，已经在 33 种蜱中检测到了 CCHFV。在 2012 年至 2019 年期间，在俄罗斯欧洲部分的南部，对超过 14 种属的 38,000 多个蜱进行了 CCHFV 检测，这些属包括：Hyalomma、Rhipicephalus、Dermacentor、Haemaphysalis 和 Ixodes。在所研究的 4,188 个蜱群中，有 252 个（6%）检测到了病毒。如预期的那样，主要的传播媒介是 H. marginatum（81%的阳性群）。该物种是在所研究的蜱中数量最多的（66%）。除了 H. marginatum 之外，还在以下物种中检测到了病毒：H. scupense、R. rossicus、R. turanicus、R. bursa、R. annulatus、D. marginatus、Haem. punctata 和 Ixodes ricinus。大多数阳性结果来自从脊椎动物宿主身上采集的蜱。对于 H. marginatum、R. rossicus、D. marginatus 和 Haem. punctata，从植被和土壤表面收集的未进食的游离蜱中检测到了病毒，这表明这些蜱参与了病毒的循环。
