Few pathogens known to man are as dangerous as the H5N1 avian influenza virus. Of the 600 reported cases of people infected, almost 60 per cent have died. The virus is considered so dangerous in the UK and Canada that research can only be performed in the highest biosafety level laboratory, a so-called BSL-4 lab. If the virus were to become readily transmissible from one person to another (it is readily transmissible between birds but not humans) it could cause a catastrophic global pandemic that would decimate the world’s population.
在人类已知的病原体当中，没有比H5N1禽流感病毒更为危险的了。在报告的600个感染病例中，死亡率接近60%。英国和加拿大将这种病毒视为极度危险的病毒，只能在生物安全级别最高的实验室——所谓的BSL-4实验室开展研究。如果这种病毒变得易于在人际间传播（目前它只在鸟类之间传播），就可能导致灾难性的manbetx app苹果 流行病，使manbetx app苹果 人口大量减少。
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