期刊
TICKS AND TICK-BORNE DISEASES
卷 12, 期 1, 页码 -出版社
ELSEVIER GMBH
DOI: 10.1016/j.ttbdis.2020.101606
关键词
Tick-borne encephalitis virus; Ticks; Tunisia
资金
- U.S. Civilian Research Fund and Development Foundation [OISE-16-62883-1]
Tick-borne encephalitis virus (TBEV) has been found in Ixodes ricinus ticks collected from northwestern Tunisia, marking the first report of TBEV in ticks from North Africa within the Palearctic region. Further studies are needed to assess the public health significance of TBEV in North Africa.
Tick-borne encephalitis virus (TBEV) is the etiologic agent of tick-borne encephalitis (TBE) and transmitted by Ixodes ricinus (Linnaeus, 1758) in Europe. The geographical distribution of I. ricinus in the Palearctic region covers also northern Africa, including northwestern Tunisia. While the eco-epidemiology of TBE in Europe is well documented, no data concerning TBEV from northern Africa are available. We investigated whether TBEV is circulating in Tunisia. A total of 877 adult I. ricinus collected from northwestern Tunisia were examined in pools for the presence of TBEV by nRT-PCR. Viral RNA was detected in one pool of three engorged ticks, yielding a minimum infection rate of 0.11 % (1/877). Phylogenetic analysis showed that the Tunisian TBEV strain belongs to the European lineage. We report for the first time the presence of TBEV in I. ricinus from northern Africa. Therefore, more studies are needed to assess the public health importance of TBEV in northern Africa.
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