全球有1500人感染猪流感病毒，30人因其死亡，这些人几乎都在墨西哥。
Swine flu has infected 1,500 people worldwide and killed around 30, almost all in Mexico.
全球有1500人感染猪流感病毒，30人因其死亡，这些人几乎都在墨西哥。
Swine flu has infected 1, 500 people worldwide and killed around 30, almost all in Mexico.
几个月以来，年轻人感染猪流感病毒的病例要多于老年人，这个不寻常的情况说明老年人很可能在过去感染过这种病毒。
For months, it has been apparent that swine flu strikes the young more often than the old - an unusual pattern that suggests older patients could have been exposed to similar viruses in the past.
一种新病毒可能演变不同流感病毒感染猪，一个人或鸟，它们的遗传物质的混合。
A new virus could evolve when different flu viruses infect a pig, a person or a bird, mingling their genetic material.
这种人的猪流感病毒在未来会感染猪吗？
科学家相信一年前或几个月以前，世界的某个地方，猪流感病毒感染了人并发生了变异，之后开始在人之间传播。
Scientists believe that somewhere in the world, months or even a year ago, a pig virus jumped to a human and mutated, and has been spreading between humans ever since.
目前感染人的猪流感病毒与猪之间的病毒是一样吗？
他说，他不知道那些患者当中有多少人被确诊为感染了猪流感病毒。
He says he does not know how many of those cases were confirmed as swine flu.
甲型流感病毒除感染人外，还可感染猪、马、海洋哺乳动物和禽类。
Influenzavirus a can infect swine, horse, mammal in ocean, poultry and human.
猪流感病毒(SIV)不仅能感染猪和禽，而且能感染人。
SIV is infectious not only to pigs and poultry but also to human.
猪流感病毒(SIV)不仅能感染猪和禽，而且能感染人。
SIV is infectious not only to pigs and poultry but also to human.
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