1. "The rhabdovirus that causes it spreads along nerve tissue from the wound to the Brain. Symptoms usually appear four to six weeks later, often Beginning with irritability and aggressiveness."
   弹状病毒使它从伤口沿神经组织而到达大脑。通常在感染后4～6小时出现症状,开始时表现为兴奋易怒,具有攻击性。

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