Japanese Encephalitis, Tibet, China
نویسندگان
چکیده
A. phagocytophilum infection has been reported in I. persulcatus and engorged D. silvarum ticks in northeastern China (3). In this study, we also found Haemaphysalis spp. ticks, including H. longicornis and H. concinna ticks, to be infected by the agent. This fi nding indicates that various tick species may be involved in the maintenance and transmission of A. phagocytophilum. Both H. longicornis and H. concinna ticks usually have 3 hosts in their life cycle and can infest a variety of wild and domestic animals such as rodents, deer, scaly anteaters, sheep, goats, and dogs. Haemaphysalis ticks are distributed in a broad range of China and sometimes feed on humans. Their competency as a vector for A. phagocytophilum and the importance of this agent in public health as well as in veterinary medicine has yet to be investigated, particularly in the areas where they are predominant (9). The gltA sequence analyses indicated that the agents detected in this study were similar to the strains isolated from rodents and sheep in northeastern China (4) and to A. phagocytophilum strains from the Russian Far East adjacent to our survey sites. However, the strains from China are genetically distant from A. phagocytophilum strains in the United States and Europe. The genetic diversity of A. phagocytophilum in various geographic locations deserves further study.
منابع مشابه
Epidemiologic Survey of Japanese Encephalitis Virus Infection, Tibet, China, 2015
We investigated Japanese encephalitis virus (JEV) prevalence in high-altitude regions of Tibet, China, by using standard assays to test mosquitoes, pigs, and humans. Results confirmed that JEV has spread to these areas. Disease prevention and control strategies should be used along with surveillance to limit spread of JEV in high-altitude regions of Tibet.
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