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Tick-borne encephalitis (TBE) is a viral infectious disease involving the central nervous system. The disease most often manifests as meningitis, encephalitis, or meningoencephalitis. Although TBE is most commonly recognized as a neurological disorder, mild fever can also occur. Long-lasting or permanent neuropsychiatric sequelae are observed in 10 to 20% of infected patients. The number of reported cases has been increasing in most countries. The tick-borne encephalitis virus is known to infect a range of hosts including ruminants, birds, rodents, carnivores, horses and humans. The disease can also be zoonotic, with ruminants and dogs providing the principal source of infection for humans.〔(Tickborne Encephalitis Virus ) reviewed and published by WikiVet, accessed 12 October 2011.〕 TBE, like Lyme disease, is one of the many tick-borne diseases. ==Signs and symptoms== The virus can infect the brain (encephalitis), the meninges (meningitis) or both (meningoencephalitis). In general, mortality is 1% to 2%, with deaths occurring 5 to 7 days after the onset of neurologic signs. In dogs, the disease also manifests as a neurological disorder with signs varying from tremors to seizures and death.〔 In ruminants, neurological disease is also present, and animals may refuse to eat, appear lethargic, and also develop respiratory signs.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tick-borne encephalitis」の詳細全文を読む スポンサード リンク
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