▲僵尸鹿疾病蔓延美国、加拿大、南韩、北欧等国。
美国早在1990年代就发现有鹿群出现「慢性消耗病(Chronic Wasting
Disease,简称CWD)」,这种致命疾病会使鹿只变得如「僵尸」一般,目前没有疫苗或治疗方法。美国研究人员发现,2022年,有2名猎人疑似因吃下僵尸鹿肉之后出现类似神经系统疾病过世,其中一名男子出现精神错乱、攻击行为等,并在一个月内离世。
今日美国报报导,感染慢性消耗病的鹿会出现流口水、体重减轻、步履蹒跚、精神萎靡、两眼无神及其他神经系统症状,这是一种罕见却严重的传染性神经系统疾病,由变性朊毒体(prion)引起,脑部「普?昂蛋白」(PrP)异常堆积后,在大脑形成海绵状空洞,并造成神经系统逐渐退化。截至2023年10月,慢性消耗病已扩散至美国、加拿大、南韩、北欧,甚至科学家对传染给人类的可能性提出警示。
德州大学健康科学中心研究人员指出,早在2022年,有2名猎人吃到僵尸鹿肉后罹患散发型库贾氏病(sporadic
Creutzfeldt-Jakob
Disease,库贾氏病是种精神系统疾病,与慢性消耗病类似),随后过世。其中一名70多岁死者出现精神错乱、攻击行为,即便有接受治疗,但不到一个月便死亡。
不过这是否代表慢性消耗病可鹿传人或甚至人传人,都必须要做进一步研究才能得知,至今并没有「僵尸鹿病」从鹿群传染给人类的确诊个案,不过自从去年11月美国黄石公园官员在一头成年骡鹿遗体体内验出慢性消耗病之后,外界的担忧程度有所上升。
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