Ticks are the most important vectors of human pathogens, leading to increased public health burdens worldwide. Tick-borne pathogens include viruses (e.g. tick-borne encephalitis and Powassan); bacteria, such as the causative agents of Lyme disease, spotted fever rickettsiosis and human anaplasmosis; and malaria-like protozoan parasites causing babesiosis. Tick-borne diseases are emerging due to the geographical expansion of their tick vectors, especially in the northern hemisphere. Two examples of this phenomenon are Ixodes scapularis and Amblyomma americanum, which have expanded their ranges in the USA in recent decades and are responsible for the continuous emergence of Lyme disease and human ehrlichiosis, respectively. This phenomenon is also occurring worldwide and is reflected by the increasing number of tick-borne encephalitis and haemorrhagic fever cases in Europe and Asia. In this review, we provide a concise synopsis of the most medically important tick-borne pathogen worldwide, with a particular emphasis on emerging public health threats.

中文翻译：

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新兴的由tick传播的对公共卫生具有重要意义的病原体：简要回顾。

cks虫是人类病原体最重要的媒介，导致全世界公共卫生负担增加。ick传播的病原体包括病毒（例如tick传播的脑炎和波瓦桑）；细菌，例如莱姆病，斑疹伤寒立克次氏病和人类无形体病的病原体；和疟疾样原生动物寄生虫，引起巴贝西虫病。由于tick传播媒介的地理范围扩大，尤其是在北半球，传播的疾病正在出现。这种现象的两个例子是肩x硬I和美洲盲A最近几十年来，它们在美国的范围有所扩大，并分别导致莱姆病和人类埃希氏菌病的不断出现。这种现象在世界范围内也正在发生，并且反映在欧洲和亚洲的tick传脑炎和出血热病例的增加中。在这篇综述中，我们简要介绍了全球医学上最重要的tick传病原体，并特别强调了新兴的公共卫生威胁。