Alzheimer's has many causes, but Dr Itzhaki estimates that genetics and this virus taken together may account for up to 60% of the explanation.

老年痴呆症的病因有很多，但是Itzhaki博士估计，遗传因素和这种病毒的感染可能占到所有病因的60%。

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Even if the link between the virus and obesity is proven, weight gain remains a complex issue that involves a person's genetics, culture, and environment, not just his or her history of infection.

即使能够证明病毒和肥胖存在联系，体重的增加仍然是一个涉及到人类基因、文化和环境因素的复杂问题而不仅仅只与他的病毒感染史有关。

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The genetics of the virus are so novel that humans are unlikely to have much immunity to it, scientists say.

科学家们称，这种病毒的遗传物质十分新奇以致于人类现在对它还没有多大的免疫。

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But the monitoring of birds, pigs, people and the genetics of the influenza virus have all been stepped up in response to recent outbreaks of both swine flu and bird flu.

BBC: La Nina 'linked' to flu pandemics

Jude Hospital in Memphis, Tennessee, used reverse genetics to produce a vaccine against the H5N1 avian flu virus.

CNN: Candidate virus for H1N1 vaccine arrives at CDC