"If there is a slight mutation in the ion channels in your heart, that's very likely to be a fatal mutation," Markham said.

马克·汉姆表示：“人类心脏的离子通道发生细微变化都很可能是致命的。”

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Although information on all these cases is incomplete, several viruses showing the same mutation were detected in fatal cases, and the mutation has also been detected in some mild cases.

虽然有关所有这些病例的资料尚不完整，但在死亡病例身上已发现有若干病毒呈现出同样的变异，在一些较轻病例身上也发现了病毒变异情况。

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The same mutation has been found in both fatal and mild cases elsewhere, including in Brazil, Japan, Mexico, Ukraine, and the United States, said the WHO.

同样的变异在别处致命的或轻微的病例中也已发现，包括巴西、日本、墨西哥、乌克兰和美国，世界卫生组织说。

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